update v1.0.7.9 R.C.

This is a Release Candidate. We are still testing.

vendor/zendframework/zend-stdlib/CHANGELOG.md

@@ -0,0 +1,286 @@
+# Changelog
+
+All notable changes to this project will be documented in this file, in reverse chronological order by release.
+
+## 3.0.1 - 2016-04-12
+
+### Added
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- [#59](https://github.com/zendframework/zend-stdlib/pull/59) fixes a notice
+  when defining the `Zend\Json\Json::GLOB_BRACE` constant on systems using
+  non-gcc glob implementations.
+
+## 3.0.0 - 2016-02-03
+
+### Added
+
+- [#51](https://github.com/zendframework/zend-stdlib/pull/51) adds PHP 7 as a
+  supported PHP version.
+- [#51](https://github.com/zendframework/zend-stdlib/pull/51) adds a migration
+  document from v2 to v3. Hint: if you use hydrators, you need to be using
+  zend-hydrator instead!
+- [#51](https://github.com/zendframework/zend-stdlib/pull/51) adds automated
+  documentation builds to gh-pages.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- [#33](https://github.com/zendframework/zend-stdlib/pull/33) - removed
+  deprecated classes
+  - *All Hydrator classes* see #22.
+  - `Zend\Stdlib\CallbackHandler` see #35
+- [#37](https://github.com/zendframework/zend-stdlib/pull/37) - removed
+  deprecated classes and polyfills:
+  - `Zend\Stdlib\DateTime`; this had been deprecated since 2.5, and only
+    existed as a polyfill for the `createFromISO8601()` support, now standard
+    in all PHP versions we support.
+  - `Zend\Stdlib\Exception\InvalidCallbackException`, which was unused since #33.
+  - `Zend\Stdlib\Guard\GuardUtils`, which duplicated `Zend\Stdlib\Guard\AllGuardsTrait`
+    to allow usage with pre-PHP 5.4 versions.
+  - `src/compatibility/autoload.php`, which has been dprecated since 2.5.
+- [#37](https://github.com/zendframework/zend-stdlib/pull/37) - removed
+  unneeded dependencies:
+  - zend-config (used only in testing ArrayUtils, and the test was redundant)
+  - zend-serializer (no longer used)
+- [#51](https://github.com/zendframework/zend-stdlib/pull/51) removes the
+  documentation for hydrators, as those are part of the zend-hydrator
+  component.
+
+### Fixed
+
+- Nothing.
+
+## 2.7.4 - 2015-10-15
+
+### Added
+
+- Nothing.
+
+### Deprecated
+
+- [#35](https://github.com/zendframework/zend-stdlib/pull/35) deprecates
+  `Zend\Stdlib\CallbackHandler`, as the one component that used it,
+  zend-eventmanager, will no longer depend on it starting in v3.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- Nothing.
+
+## 2.7.3 - 2015-09-24
+
+### Added
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- [#27](https://github.com/zendframework/zend-stdlib/pull/27) fixes a race
+  condition in the `FastPriorityQueue::remove()` logic that occurs when removing
+  items iteratively from the same priority of a queue.
+
+## 2.7.2 - 2015-09-23
+
+### Added
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- [#26](https://github.com/zendframework/zend-stdlib/pull/26) fixes a subtle
+  inheritance issue with deprecation in the hydrators, and updates the
+  `HydratorInterface` to also extend the zend-hydrator `HydratorInterface` to
+  ensure LSP is preserved.
+
+## 2.7.1 - 2015-09-22
+
+### Added
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- [#24](https://github.com/zendframework/zend-stdlib/pull/24) fixes an import in
+  `FastPriorityQueue` to alias `SplPriorityQueue` in order to disambiguate with
+  the local override present in the component.
+
+## 2.7.0 - 2015-09-22
+
+### Added
+
+- [#19](https://github.com/zendframework/zend-stdlib/pull/19) adds a new
+  `FastPriorityQueue` implementation. It follows the same signature as
+  `SplPriorityQueue`, but uses a performance-optimized algorithm:
+
+  - inserts are 2x faster than `SplPriorityQueue` and 3x faster than the
+    `Zend\Stdlib\PriorityQueue` implementation.
+  - extracts are 4x faster than `SplPriorityQueue` and 4-5x faster than the
+    `Zend\Stdlib\PriorityQueue` implementation.
+
+  The intention is to use this as a drop-in replacement in the
+  `zend-eventmanager` component to provide performance benefits.
+
+### Deprecated
+
+- [#20](https://github.com/zendframework/zend-stdlib/pull/20) deprecates *all
+  hydrator* classes, in favor of the new [zend-hydrator](https://github.com/zendframework/zend-hydrator)
+  component. All classes were updated to extend their zend-hydrator equivalents,
+  and marked as `@deprecated`, indicating the equivalent class from the other
+  repository.
+
+  Users *should* immediately start changing their code to use the zend-hydrator
+  equivalents; in most cases, this can be as easy as removing the `Stdlib`
+  namespace from import statements or hydrator configuration. Hydrators will be
+  removed entirely from zend-stdlib in v3.0, and all future updates to hydrators
+  will occur in the zend-hydrator library.
+
+  Changes with backwards compatibility implications:
+
+  - Users implementing `Zend\Stdlib\Hydrator\HydratorAwareInterface` will need to
+    update their `setHydrator()` implementation to typehint on
+    `Zend\Hydrator\HydratorInterface`. This can be done by changing the import
+    statement for that interface as follows:
+
+    ```php
+    // Replace this:
+    use Zend\Stdlib\Hydrator\HydratorInterface;
+    // with this:
+    use Zend\Hydrator\HydratorInterface;
+    ```
+
+    If you are not using imports, change the typehint within the signature itself:
+
+    ```php
+    // Replace this:
+    public function setHydrator(\Zend\Stdlib\Hydrator\HydratorInterface $hydrator)
+    // with this:
+    public function setHydrator(\Zend\Hydrator\HydratorInterface $hydrator)
+    ```
+
+    If you are using `Zend\Stdlib\Hydrator\HydratorAwareTrait`, no changes are
+    necessary, unless you override that method.
+
+  - If you were catching hydrator-generated exceptions, these were previously in
+    the `Zend\Stdlib\Exception` namespace. You will need to update your code to
+    catch exceptions in the `Zend\Hydrator\Exception` namespace.
+
+  - Users who *do* migrate to zend-hydrator may end up in a situation where
+    their code will not work with existing libraries that are still type-hinting
+    on the zend-stdlib interfaces. We will be attempting to address that ASAP,
+    but the deprecation within zend-stdlib is necessary as a first step.
+
+    In the meantime, you can write hydrators targeting zend-stdlib still in
+    order to guarantee compatibility.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- Nothing.
+
+## 2.6.0 - 2015-07-21
+
+### Added
+
+- [#13](https://github.com/zendframework/zend-stdlib/pull/13) adds
+  `Zend\Stdlib\Hydrator\Iterator`, which provides mechanisms for hydrating
+  objects when iterating a traversable. This allows creating generic collection
+  resultsets; the original idea was pulled from
+  [PhlyMongo](https://github.com/phly/PhlyMongo), where it was used to hydrate
+  collections retrieved from MongoDB.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- Nothing.
+
+## 2.5.2 - 2015-07-21
+
+### Added
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- [#9](https://github.com/zendframework/zend-stdlib/pull/9) fixes an issue with
+  count incrementation during insert in PriorityList, ensuring that incrementation only
+  occurs when the item inserted was not previously present in the list.
+
+## 2.4.4 - 2015-07-21
+
+### Added
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- [#9](https://github.com/zendframework/zend-stdlib/pull/9) fixes an issue with
+  count incrementation during insert in PriorityList, ensuring that incrementation only
+  occurs when the item inserted was not previously present in the list.

vendor/zendframework/zend-stdlib/CONDUCT.md

@@ -0,0 +1,43 @@
+# Contributor Code of Conduct
+
+The Zend Framework project adheres to [The Code Manifesto](http://codemanifesto.com)
+as its guidelines for contributor interactions.
+
+## The Code Manifesto
+
+We want to work in an ecosystem that empowers developers to reach their
+potential — one that encourages growth and effective collaboration. A space that
+is safe for all.
+
+A space such as this benefits everyone that participates in it. It encourages
+new developers to enter our field. It is through discussion and collaboration
+that we grow, and through growth that we improve.
+
+In the effort to create such a place, we hold to these values:
+
+1. **Discrimination limits us.** This includes discrimination on the basis of
+   race, gender, sexual orientation, gender identity, age, nationality, technology
+   and any other arbitrary exclusion of a group of people.
+2. **Boundaries honor us.** Your comfort levels are not everyone’s comfort
+   levels. Remember that, and if brought to your attention, heed it.
+3. **We are our biggest assets.** None of us were born masters of our trade.
+   Each of us has been helped along the way. Return that favor, when and where
+   you can.
+4. **We are resources for the future.** As an extension of #3, share what you
+   know. Make yourself a resource to help those that come after you.
+5. **Respect defines us.** Treat others as you wish to be treated. Make your
+   discussions, criticisms and debates from a position of respectfulness. Ask
+   yourself, is it true? Is it necessary? Is it constructive? Anything less is
+   unacceptable.
+6. **Reactions require grace.** Angry responses are valid, but abusive language
+   and vindictive actions are toxic. When something happens that offends you,
+   handle it assertively, but be respectful. Escalate reasonably, and try to
+   allow the offender an opportunity to explain themselves, and possibly correct
+   the issue.
+7. **Opinions are just that: opinions.** Each and every one of us, due to our
+   background and upbringing, have varying opinions. The fact of the matter, is
+   that is perfectly acceptable. Remember this: if you respect your own
+   opinions, you should respect the opinions of others.
+8. **To err is human.** You might not intend it, but mistakes do happen and
+   contribute to build experience. Tolerate honest mistakes, and don't hesitate
+   to apologize if you make one yourself.

vendor/zendframework/zend-stdlib/CONTRIBUTING.md

@@ -0,0 +1,244 @@
+# CONTRIBUTING
+
+## RESOURCES
+
+If you wish to contribute to Zend Framework, please be sure to
+read/subscribe to the following resources:
+
+ -  [Coding Standards](https://github.com/zendframework/zf2/wiki/Coding-Standards)
+ -  [Contributor's Guide](http://framework.zend.com/participate/contributor-guide)
+ -  ZF Contributor's mailing list:
+    Archives: http://zend-framework-community.634137.n4.nabble.com/ZF-Contributor-f680267.html
+    Subscribe: zf-contributors-subscribe@lists.zend.com
+ -  ZF Contributor's IRC channel:
+    #zftalk.dev on Freenode.net
+
+If you are working on new features or refactoring [create a proposal](https://github.com/zendframework/zend-stdlib/issues/new).
+
+## Reporting Potential Security Issues
+
+If you have encountered a potential security vulnerability, please **DO NOT** report it on the public
+issue tracker: send it to us at [zf-security@zend.com](mailto:zf-security@zend.com) instead.
+We will work with you to verify the vulnerability and patch it as soon as possible.
+
+When reporting issues, please provide the following information:
+
+- Component(s) affected
+- A description indicating how to reproduce the issue
+- A summary of the security vulnerability and impact
+
+We request that you contact us via the email address above and give the project
+contributors a chance to resolve the vulnerability and issue a new release prior
+to any public exposure; this helps protect users and provides them with a chance
+to upgrade and/or update in order to protect their applications.
+
+For sensitive email communications, please use [our PGP key](http://framework.zend.com/zf-security-pgp-key.asc).
+
+## RUNNING TESTS
+
+> ### Note: testing versions prior to 2.4
+>
+> This component originates with Zend Framework 2. During the lifetime of ZF2,
+> testing infrastructure migrated from PHPUnit 3 to PHPUnit 4. In most cases, no
+> changes were necessary. However, due to the migration, tests may not run on
+> versions < 2.4. As such, you may need to change the PHPUnit dependency if
+> attempting a fix on such a version.
+
+To run tests:
+
+- Clone the repository:
+
+  ```console
+  $ git clone git@github.com:zendframework/zend-stdlib.git
+  $ cd
+  ```
+
+- Install dependencies via composer:
+
+  ```console
+  $ curl -sS https://getcomposer.org/installer | php --
+  $ ./composer.phar install
+  ```
+
+  If you don't have `curl` installed, you can also download `composer.phar` from https://getcomposer.org/
+
+- Run the tests via `phpunit` and the provided PHPUnit config, like in this example:
+
+  ```console
+  $ ./vendor/bin/phpunit
+  ```
+
+You can turn on conditional tests with the phpunit.xml file.
+To do so:
+
+ -  Copy `phpunit.xml.dist` file to `phpunit.xml`
+ -  Edit `phpunit.xml` to enable any specific functionality you
+    want to test, as well as to provide test values to utilize.
+
+## Running Coding Standards Checks
+
+This component uses [php-cs-fixer](http://cs.sensiolabs.org/) for coding
+standards checks, and provides configuration for our selected checks.
+`php-cs-fixer` is installed by default via Composer.
+
+To run checks only:
+
+```console
+$ ./vendor/bin/php-cs-fixer fix . -v --diff --dry-run --config-file=.php_cs
+```
+
+To have `php-cs-fixer` attempt to fix problems for you, omit the `--dry-run`
+flag:
+
+```console
+$ ./vendor/bin/php-cs-fixer fix . -v --diff --config-file=.php_cs
+```
+
+If you allow php-cs-fixer to fix CS issues, please re-run the tests to ensure
+they pass, and make sure you add and commit the changes after verification.
+
+## Benchmarks
+
+We provide benchmark tests for zend-stdlib under the directory [benchmark/](benchmark/),
+using.  [athletic](https://github.com/polyfractal/athletic).  You can execute
+the benchmarks running the following command:
+
+```bash
+$ ./vendor/bin/athletic -p benchmark
+```
+
+## Recommended Workflow for Contributions
+
+Your first step is to establish a public repository from which we can
+pull your work into the master repository. We recommend using
+[GitHub](https://github.com), as that is where the component is already hosted.
+
+1. Setup a [GitHub account](http://github.com/), if you haven't yet
+2. Fork the repository (http://github.com/zendframework/zend-stdlib)
+3. Clone the canonical repository locally and enter it.
+
+   ```console
+   $ git clone git://github.com:zendframework/zend-stdlib.git
+   $ cd zend-stdlib
+   ```
+
+4. Add a remote to your fork; substitute your GitHub username in the command
+   below.
+
+   ```console
+   $ git remote add {username} git@github.com:{username}/zend-stdlib.git
+   $ git fetch {username}
+   ```
+
+### Keeping Up-to-Date
+
+Periodically, you should update your fork or personal repository to
+match the canonical ZF repository. Assuming you have setup your local repository
+per the instructions above, you can do the following:
+
+
+```console
+$ git checkout master
+$ git fetch origin
+$ git rebase origin/master
+# OPTIONALLY, to keep your remote up-to-date -
+$ git push {username} master:master
+```
+
+If you're tracking other branches -- for example, the "develop" branch, where
+new feature development occurs -- you'll want to do the same operations for that
+branch; simply substitute  "develop" for "master".
+
+### Working on a patch
+
+We recommend you do each new feature or bugfix in a new branch. This simplifies
+the task of code review as well as the task of merging your changes into the
+canonical repository.
+
+A typical workflow will then consist of the following:
+
+1. Create a new local branch based off either your master or develop branch.
+2. Switch to your new local branch. (This step can be combined with the
+   previous step with the use of `git checkout -b`.)
+3. Do some work, commit, repeat as necessary.
+4. Push the local branch to your remote repository.
+5. Send a pull request.
+
+The mechanics of this process are actually quite trivial. Below, we will
+create a branch for fixing an issue in the tracker.
+
+```console
+$ git checkout -b hotfix/9295
+Switched to a new branch 'hotfix/9295'
+```
+
+... do some work ...
+
+
+```console
+$ git commit
+```
+
+... write your log message ...
+
+
+```console
+$ git push {username} hotfix/9295:hotfix/9295
+Counting objects: 38, done.
+Delta compression using up to 2 threads.
+Compression objects: 100% (18/18), done.
+Writing objects: 100% (20/20), 8.19KiB, done.
+Total 20 (delta 12), reused 0 (delta 0)
+To ssh://git@github.com/{username}/zend-stdlib.git
+   b5583aa..4f51698  HEAD -> master
+```
+
+To send a pull request, you have two options.
+
+If using GitHub, you can do the pull request from there. Navigate to
+your repository, select the branch you just created, and then select the
+"Pull Request" button in the upper right. Select the user/organization
+"zendframework" as the recipient.
+
+If using your own repository - or even if using GitHub - you can use `git
+format-patch` to create a patchset for us to apply; in fact, this is
+**recommended** for security-related patches. If you use `format-patch`, please
+send the patches as attachments to:
+
+-  zf-devteam@zend.com for patches without security implications
+-  zf-security@zend.com for security patches
+
+#### What branch to issue the pull request against?
+
+Which branch should you issue a pull request against?
+
+- For fixes against the stable release, issue the pull request against the
+  "master" branch.
+- For new features, or fixes that introduce new elements to the public API (such
+  as new public methods or properties), issue the pull request against the
+  "develop" branch.
+
+### Branch Cleanup
+
+As you might imagine, if you are a frequent contributor, you'll start to
+get a ton of branches both locally and on your remote.
+
+Once you know that your changes have been accepted to the master
+repository, we suggest doing some cleanup of these branches.
+
+-  Local branch cleanup
+
+   ```console
+   $ git branch -d <branchname>
+   ```
+
+-  Remote branch removal
+
+   ```console
+   $ git push {username} :<branchname>
+   ```
+
+
+## Conduct
+
+Please see our [CONDUCT.md](CONDUCT.md) to understand expected behavior when interacting with others in the project.

vendor/zendframework/zend-stdlib/LICENSE.md

@@ -0,0 +1,28 @@
+Copyright (c) 2005-2015, Zend Technologies USA, Inc.
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+- Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+- Neither the name of Zend Technologies USA, Inc. nor the names of its
+  contributors may be used to endorse or promote products derived from this
+  software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/zendframework/zend-stdlib/README.md

@@ -0,0 +1,18 @@
+# zend-stdlib
+
+[![Build Status](https://secure.travis-ci.org/zendframework/zend-stdlib.svg?branch=master)](https://secure.travis-ci.org/zendframework/zend-stdlib)
+[![Coverage Status](https://coveralls.io/repos/zendframework/zend-stdlib/badge.svg?branch=master)](https://coveralls.io/r/zendframework/zend-stdlib?branch=master)
+
+`Zend\Stdlib` is a set of components that implements general purpose utility
+class for different scopes like:
+
+- array utilities functions;
+- json serializable interfaces;
+- general messaging systems;
+- string wrappers;
+- etc.
+
+---
+
+- File issues at https://github.com/zendframework/zend-stdlib/issues
+- Documentation is at http://framework.zend.com/manual/current/en/index.html#zend-stdlib

vendor/zendframework/zend-stdlib/benchmark/ExtractPriorityQueue.php

@@ -0,0 +1,56 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace ZendBench\Stdlib;
+
+use Athletic\AthleticEvent;
+use Zend\Stdlib\FastPriorityQueue;
+use Zend\Stdlib\PriorityQueue;
+use Zend\Stdlib\SplPriorityQueue;
+
+class ExtractPriorityQueue extends AthleticEvent
+{
+    public function classSetUp()
+    {
+        $this->splPriorityQueue  = new SplPriorityQueue();
+        $this->fastPriorityQueue = new FastPriorityQueue();
+        $this->priorityQueue     = new PriorityQueue();
+
+        for ($i = 0; $i < 5000; $i += 1) {
+            $priority = rand(1, 100);
+            $this->splPriorityQueue->insert('foo', $priority);
+            $this->fastPriorityQueue->insert('foo', $priority);
+            $this->priorityQueue->insert('foo', $priority);
+        }
+    }
+
+    /**
+     * @iterations 5000
+     */
+    public function extractSplPriorityQueue()
+    {
+        $this->splPriorityQueue->extract();
+    }
+
+    /**
+     * @iterations 5000
+     */
+    public function extractPriorityQueue()
+    {
+        $this->priorityQueue->extract();
+    }
+
+    /**
+     * @iterations 5000
+     */
+    public function extractFastPriorityQueue()
+    {
+        $this->fastPriorityQueue->extract();
+    }
+}

vendor/zendframework/zend-stdlib/benchmark/InsertPriorityQueue.php

@@ -0,0 +1,49 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace ZendBench\Stdlib;
+
+use Athletic\AthleticEvent;
+use Zend\Stdlib\FastPriorityQueue;
+use Zend\Stdlib\PriorityQueue;
+use Zend\Stdlib\SplPriorityQueue;
+
+class InsertPriorityQueue extends AthleticEvent
+{
+    public function classSetUp()
+    {
+        $this->splPriorityQueue  = new SplPriorityQueue();
+        $this->fastPriorityQueue = new FastPriorityQueue();
+        $this->priorityQueue     = new PriorityQueue();
+    }
+
+    /**
+     * @iterations 5000
+     */
+    public function insertSplPriorityQueue()
+    {
+        $this->splPriorityQueue->insert('foo', rand(1, 100));
+    }
+
+    /**
+     * @iterations 5000
+     */
+    public function insertPriorityQueue()
+    {
+        $this->priorityQueue->insert('foo', rand(1, 100));
+    }
+
+    /**
+     * @iterations 5000
+     */
+    public function insertFastPriorityQueue()
+    {
+        $this->fastPriorityQueue->insert('foo', rand(1, 100));
+    }
+}

vendor/zendframework/zend-stdlib/benchmark/RemovePriorityQueue.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace ZendBench\Stdlib;
+
+use Athletic\AthleticEvent;
+use Zend\Stdlib\FastPriorityQueue;
+use Zend\Stdlib\PriorityQueue;
+
+class RemovePriorityQueue extends AthleticEvent
+{
+    public function classSetUp()
+    {
+        $this->fastPriorityQueue = new FastPriorityQueue();
+        $this->priorityQueue     = new PriorityQueue();
+
+        for ($i = 0; $i < 1000; $i += 1) {
+            $priority = rand(1, 100);
+            $this->fastPriorityQueue->insert('foo', $priority);
+            $this->priorityQueue->insert('foo', $priority);
+        }
+    }
+
+    /**
+     * @iterations 1000
+     */
+    public function removePriorityQueue()
+    {
+        $this->priorityQueue->remove('foo');
+    }
+
+    /**
+     * @iterations 1000
+     */
+    public function removeFastPriorityQueue()
+    {
+        $this->fastPriorityQueue->remove('foo');
+    }
+}

vendor/zendframework/zend-stdlib/composer.json

@@ -0,0 +1,35 @@
+{
+    "name": "zendframework/zend-stdlib",
+    "description": " ",
+    "license": "BSD-3-Clause",
+    "keywords": [
+        "zf2",
+        "stdlib"
+    ],
+    "homepage": "https://github.com/zendframework/zend-stdlib",
+    "autoload": {
+        "psr-4": {
+            "Zend\\Stdlib\\": "src/"
+        }
+    },
+    "require": {
+        "php": "^5.5 || ^7.0"
+    },
+    "require-dev": {
+        "fabpot/php-cs-fixer": "1.7.*",
+        "phpunit/PHPUnit": "~4.0",
+        "athletic/athletic": "~0.1"
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "3.0-dev",
+            "dev-develop": "3.1-dev"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "ZendTest\\Stdlib\\": "test/",
+            "ZendBench\\Stdlib\\": "benchmark/"
+        }
+    }
+}

vendor/zendframework/zend-stdlib/doc/book/index.html

@@ -0,0 +1,10 @@
+<div class="container">
+  <div class="jumbotron">
+    <h1>zend-stdlib</h1>
+    
+    <p>SPL extensions, array utilities, error handlers, and more.</p>
+
+    <pre><code class="language-bash">$ composer require zendframework/zend-stdlib</code></pre>
+  </div>
+</div>
+

vendor/zendframework/zend-stdlib/doc/book/index.md

@@ -0,0 +1 @@
+../../README.md

vendor/zendframework/zend-stdlib/doc/book/migration.md

@@ -0,0 +1,60 @@
+# Migration Guide
+
+## From v2 to v3
+
+The changes made going from v2 to v3 were:
+
+- Removal of the Hydrator subcomponent.
+- Removal of the `CallbackHandler` class.
+- Removal of `Zend\Stdlib\Guard\GuardUtils`.
+
+### Hydrators
+
+The biggest single change from version 2 to version 3 is that the hydrator
+subcomponent, which was deprecated in v2.7.0, is now removed. This means that if
+you were using zend-stdlib principally for the hydrators, you need to convert
+your code to use [zend-hydrator](https://github.com/zendframework/zend-hydrator).
+
+This will also mean a multi-step migration. zend-stdlib v3 pre-dates
+zend-hydrator v2.1, which will be the first version that supports zend-stdlib v3
+and zend-servicemanager v3. If you are using Composer, the migration should be
+seamless:
+
+- Remove your zend-stdlib dependency:
+
+  ```bash
+  $ composer remove zendframework/zend-stdlib
+  ```
+
+- Update to use zend-hydrator:
+
+  ```bash
+  $ composer require zendframework/zend-hydrator
+  ```
+
+When zend-hydrator updates to newer versions of zend-stdlib and
+zend-servicemanager, you will either automatically get those versions, or you
+can tell composer to use those specific versions:
+
+```bash
+$ composer require "zendframework/zend-stdlib:^3.0"
+```
+
+### CallbackHandler
+
+`Zend\Stdlib\CallbackHandler` primarily existed for legacy purposes; it was
+created before the `callable` typehint existed, so that we could typehint PHP
+callables. It also provided some minimal features around lazy-loading callables
+from instantiable classes, but these features were rarely used, and better
+approaches already exist for handling such functinality in zend-servicemanager
+and zend-expressive.
+
+As such, the class was marked deprecated in v2.7.0, and removed for v3.0.0.
+
+### GuardUtils
+
+Version 3 removes `Zend\Stdlib\Guard\GuardUtils`. This abstract class existed to
+provide the functionality of the various traits also present in that
+subcomponent, for consumers on versions of PHP earlier than 5.4. Since the
+minimum required version is now PHP 5.5, the class is unnecessary. If you were
+using it previously, compose the related traits instead.

vendor/zendframework/zend-stdlib/doc/bookdown.json

@@ -0,0 +1,14 @@
+{
+    "title": "Zend\\Stdlib",
+    "target": "html/",
+    "content": [
+        "book/zend.stdlib.hydrator.md",
+        "book/zend.stdlib.hydrator.filter.md",
+        "book/zend.stdlib.hydrator.strategy.md",
+        "book/zend.stdlib.hydrator.aggregate.md",
+        "book/zend.stdlib.hydrator.namingstrategy.compositenamingstrategy.md",
+        "book/zend.stdlib.hydrator.namingstrategy.identitynamingstrategy.md",
+        "book/zend.stdlib.hydrator.namingstrategy.mapnamingstrategy.md",
+        "book/zend.stdlib.hydrator.namingstrategy.underscorenamingstrategy.md"
+    ]
+}

vendor/zendframework/zend-stdlib/mkdocs.yml

@@ -0,0 +1,9 @@
+docs_dir: doc/book
+site_dir: doc/html
+pages:
+    - index.md
+    - Migration: migration.md
+site_name: zend-stdlib
+site_description: Zend\Stdlib
+repo_url: 'https://github.com/zendframework/zend-stdlib'
+copyright: 'Copyright (c) 2016 <a href="http://www.zend.com/">Zend Technologies USA Inc.</a>'

vendor/zendframework/zend-stdlib/src/AbstractOptions.php

@@ -0,0 +1,176 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use Traversable;
+
+abstract class AbstractOptions implements ParameterObjectInterface
+{
+    /**
+     * We use the __ prefix to avoid collisions with properties in
+     * user-implementations.
+     *
+     * @var bool
+     */
+    protected $__strictMode__ = true;
+
+    /**
+     * Constructor
+     *
+     * @param  array|Traversable|null $options
+     */
+    public function __construct($options = null)
+    {
+        if (null !== $options) {
+            $this->setFromArray($options);
+        }
+    }
+
+    /**
+     * Set one or more configuration properties
+     *
+     * @param  array|Traversable|AbstractOptions $options
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractOptions Provides fluent interface
+     */
+    public function setFromArray($options)
+    {
+        if ($options instanceof self) {
+            $options = $options->toArray();
+        }
+
+        if (!is_array($options) && !$options instanceof Traversable) {
+            throw new Exception\InvalidArgumentException(
+                sprintf(
+                    'Parameter provided to %s must be an %s, %s or %s',
+                    __METHOD__,
+                    'array',
+                    'Traversable',
+                    'Zend\Stdlib\AbstractOptions'
+                )
+            );
+        }
+
+        foreach ($options as $key => $value) {
+            $this->__set($key, $value);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Cast to array
+     *
+     * @return array
+     */
+    public function toArray()
+    {
+        $array = [];
+        $transform = function ($letters) {
+            $letter = array_shift($letters);
+            return '_' . strtolower($letter);
+        };
+        foreach ($this as $key => $value) {
+            if ($key === '__strictMode__') {
+                continue;
+            }
+            $normalizedKey = preg_replace_callback('/([A-Z])/', $transform, $key);
+            $array[$normalizedKey] = $value;
+        }
+        return $array;
+    }
+
+    /**
+     * Set a configuration property
+     *
+     * @see ParameterObject::__set()
+     * @param string $key
+     * @param mixed $value
+     * @throws Exception\BadMethodCallException
+     * @return void
+     */
+    public function __set($key, $value)
+    {
+        $setter = 'set' . str_replace('_', '', $key);
+
+        if (is_callable([$this, $setter])) {
+            $this->{$setter}($value);
+
+            return;
+        }
+
+        if ($this->__strictMode__) {
+            throw new Exception\BadMethodCallException(sprintf(
+                'The option "%s" does not have a callable "%s" ("%s") setter method which must be defined',
+                $key,
+                'set' . str_replace(' ', '', ucwords(str_replace('_', ' ', $key))),
+                $setter
+            ));
+        }
+    }
+
+    /**
+     * Get a configuration property
+     *
+     * @see ParameterObject::__get()
+     * @param string $key
+     * @throws Exception\BadMethodCallException
+     * @return mixed
+     */
+    public function __get($key)
+    {
+        $getter = 'get' . str_replace('_', '', $key);
+
+        if (is_callable([$this, $getter])) {
+            return $this->{$getter}();
+        }
+
+        throw new Exception\BadMethodCallException(sprintf(
+            'The option "%s" does not have a callable "%s" getter method which must be defined',
+            $key,
+            'get' . str_replace(' ', '', ucwords(str_replace('_', ' ', $key)))
+        ));
+    }
+
+    /**
+     * Test if a configuration property is null
+     * @see ParameterObject::__isset()
+     * @param string $key
+     * @return bool
+     */
+    public function __isset($key)
+    {
+        $getter = 'get' . str_replace('_', '', $key);
+
+        return method_exists($this, $getter) && null !== $this->__get($key);
+    }
+
+    /**
+     * Set a configuration property to NULL
+     *
+     * @see ParameterObject::__unset()
+     * @param string $key
+     * @throws Exception\InvalidArgumentException
+     * @return void
+     */
+    public function __unset($key)
+    {
+        try {
+            $this->__set($key, null);
+        } catch (Exception\BadMethodCallException $e) {
+            throw new Exception\InvalidArgumentException(
+                'The class property $' . $key . ' cannot be unset as'
+                . ' NULL is an invalid value for it',
+                0,
+                $e
+            );
+        }
+    }
+}

vendor/zendframework/zend-stdlib/src/ArrayObject.php

@@ -0,0 +1,432 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use ArrayAccess;
+use Countable;
+use IteratorAggregate;
+use Serializable;
+
+/**
+ * Custom framework ArrayObject implementation
+ *
+ * Extends version-specific "abstract" implementation.
+ */
+class ArrayObject implements IteratorAggregate, ArrayAccess, Serializable, Countable
+{
+    /**
+     * Properties of the object have their normal functionality
+     * when accessed as list (var_dump, foreach, etc.).
+     */
+    const STD_PROP_LIST = 1;
+
+    /**
+     * Entries can be accessed as properties (read and write).
+     */
+    const ARRAY_AS_PROPS = 2;
+
+    /**
+     * @var array
+     */
+    protected $storage;
+
+    /**
+     * @var int
+     */
+    protected $flag;
+
+    /**
+     * @var string
+     */
+    protected $iteratorClass;
+
+    /**
+     * @var array
+     */
+    protected $protectedProperties;
+
+    /**
+     * Constructor
+     *
+     * @param array  $input
+     * @param int    $flags
+     * @param string $iteratorClass
+     */
+    public function __construct($input = [], $flags = self::STD_PROP_LIST, $iteratorClass = 'ArrayIterator')
+    {
+        $this->setFlags($flags);
+        $this->storage = $input;
+        $this->setIteratorClass($iteratorClass);
+        $this->protectedProperties = array_keys(get_object_vars($this));
+    }
+
+    /**
+     * Returns whether the requested key exists
+     *
+     * @param  mixed $key
+     * @return bool
+     */
+    public function __isset($key)
+    {
+        if ($this->flag == self::ARRAY_AS_PROPS) {
+            return $this->offsetExists($key);
+        }
+        if (in_array($key, $this->protectedProperties)) {
+            throw new Exception\InvalidArgumentException('$key is a protected property, use a different key');
+        }
+
+        return isset($this->$key);
+    }
+
+    /**
+     * Sets the value at the specified key to value
+     *
+     * @param  mixed $key
+     * @param  mixed $value
+     * @return void
+     */
+    public function __set($key, $value)
+    {
+        if ($this->flag == self::ARRAY_AS_PROPS) {
+            return $this->offsetSet($key, $value);
+        }
+        if (in_array($key, $this->protectedProperties)) {
+            throw new Exception\InvalidArgumentException('$key is a protected property, use a different key');
+        }
+        $this->$key = $value;
+    }
+
+    /**
+     * Unsets the value at the specified key
+     *
+     * @param  mixed $key
+     * @return void
+     */
+    public function __unset($key)
+    {
+        if ($this->flag == self::ARRAY_AS_PROPS) {
+            return $this->offsetUnset($key);
+        }
+        if (in_array($key, $this->protectedProperties)) {
+            throw new Exception\InvalidArgumentException('$key is a protected property, use a different key');
+        }
+        unset($this->$key);
+    }
+
+    /**
+     * Returns the value at the specified key by reference
+     *
+     * @param  mixed $key
+     * @return mixed
+     */
+    public function &__get($key)
+    {
+        $ret = null;
+        if ($this->flag == self::ARRAY_AS_PROPS) {
+            $ret =& $this->offsetGet($key);
+
+            return $ret;
+        }
+        if (in_array($key, $this->protectedProperties)) {
+            throw new Exception\InvalidArgumentException('$key is a protected property, use a different key');
+        }
+
+        return $this->$key;
+    }
+
+    /**
+     * Appends the value
+     *
+     * @param  mixed $value
+     * @return void
+     */
+    public function append($value)
+    {
+        $this->storage[] = $value;
+    }
+
+    /**
+     * Sort the entries by value
+     *
+     * @return void
+     */
+    public function asort()
+    {
+        asort($this->storage);
+    }
+
+    /**
+     * Get the number of public properties in the ArrayObject
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->storage);
+    }
+
+    /**
+     * Exchange the array for another one.
+     *
+     * @param  array|ArrayObject $data
+     * @return array
+     */
+    public function exchangeArray($data)
+    {
+        if (!is_array($data) && !is_object($data)) {
+            throw new Exception\InvalidArgumentException('Passed variable is not an array or object, using empty array instead');
+        }
+
+        if (is_object($data) && ($data instanceof self || $data instanceof \ArrayObject)) {
+            $data = $data->getArrayCopy();
+        }
+        if (!is_array($data)) {
+            $data = (array) $data;
+        }
+
+        $storage = $this->storage;
+
+        $this->storage = $data;
+
+        return $storage;
+    }
+
+    /**
+     * Creates a copy of the ArrayObject.
+     *
+     * @return array
+     */
+    public function getArrayCopy()
+    {
+        return $this->storage;
+    }
+
+    /**
+     * Gets the behavior flags.
+     *
+     * @return int
+     */
+    public function getFlags()
+    {
+        return $this->flag;
+    }
+
+    /**
+     * Create a new iterator from an ArrayObject instance
+     *
+     * @return \Iterator
+     */
+    public function getIterator()
+    {
+        $class = $this->iteratorClass;
+
+        return new $class($this->storage);
+    }
+
+    /**
+     * Gets the iterator classname for the ArrayObject.
+     *
+     * @return string
+     */
+    public function getIteratorClass()
+    {
+        return $this->iteratorClass;
+    }
+
+    /**
+     * Sort the entries by key
+     *
+     * @return void
+     */
+    public function ksort()
+    {
+        ksort($this->storage);
+    }
+
+    /**
+     * Sort an array using a case insensitive "natural order" algorithm
+     *
+     * @return void
+     */
+    public function natcasesort()
+    {
+        natcasesort($this->storage);
+    }
+
+    /**
+     * Sort entries using a "natural order" algorithm
+     *
+     * @return void
+     */
+    public function natsort()
+    {
+        natsort($this->storage);
+    }
+
+    /**
+     * Returns whether the requested key exists
+     *
+     * @param  mixed $key
+     * @return bool
+     */
+    public function offsetExists($key)
+    {
+        return isset($this->storage[$key]);
+    }
+
+    /**
+     * Returns the value at the specified key
+     *
+     * @param  mixed $key
+     * @return mixed
+     */
+    public function &offsetGet($key)
+    {
+        $ret = null;
+        if (!$this->offsetExists($key)) {
+            return $ret;
+        }
+        $ret =& $this->storage[$key];
+
+        return $ret;
+    }
+
+    /**
+     * Sets the value at the specified key to value
+     *
+     * @param  mixed $key
+     * @param  mixed $value
+     * @return void
+     */
+    public function offsetSet($key, $value)
+    {
+        $this->storage[$key] = $value;
+    }
+
+    /**
+     * Unsets the value at the specified key
+     *
+     * @param  mixed $key
+     * @return void
+     */
+    public function offsetUnset($key)
+    {
+        if ($this->offsetExists($key)) {
+            unset($this->storage[$key]);
+        }
+    }
+
+    /**
+     * Serialize an ArrayObject
+     *
+     * @return string
+     */
+    public function serialize()
+    {
+        return serialize(get_object_vars($this));
+    }
+
+    /**
+     * Sets the behavior flags
+     *
+     * @param  int  $flags
+     * @return void
+     */
+    public function setFlags($flags)
+    {
+        $this->flag = $flags;
+    }
+
+    /**
+     * Sets the iterator classname for the ArrayObject
+     *
+     * @param  string $class
+     * @return void
+     */
+    public function setIteratorClass($class)
+    {
+        if (class_exists($class)) {
+            $this->iteratorClass = $class;
+
+            return ;
+        }
+
+        if (strpos($class, '\\') === 0) {
+            $class = '\\' . $class;
+            if (class_exists($class)) {
+                $this->iteratorClass = $class;
+
+                return ;
+            }
+        }
+
+        throw new Exception\InvalidArgumentException('The iterator class does not exist');
+    }
+
+    /**
+     * Sort the entries with a user-defined comparison function and maintain key association
+     *
+     * @param  callable $function
+     * @return void
+     */
+    public function uasort($function)
+    {
+        if (is_callable($function)) {
+            uasort($this->storage, $function);
+        }
+    }
+
+    /**
+     * Sort the entries by keys using a user-defined comparison function
+     *
+     * @param  callable $function
+     * @return void
+     */
+    public function uksort($function)
+    {
+        if (is_callable($function)) {
+            uksort($this->storage, $function);
+        }
+    }
+
+    /**
+     * Unserialize an ArrayObject
+     *
+     * @param  string $data
+     * @return void
+     */
+    public function unserialize($data)
+    {
+        $ar                        = unserialize($data);
+        $this->protectedProperties = array_keys(get_object_vars($this));
+
+        $this->setFlags($ar['flag']);
+        $this->exchangeArray($ar['storage']);
+        $this->setIteratorClass($ar['iteratorClass']);
+
+        foreach ($ar as $k => $v) {
+            switch ($k) {
+                case 'flag':
+                    $this->setFlags($v);
+                    break;
+                case 'storage':
+                    $this->exchangeArray($v);
+                    break;
+                case 'iteratorClass':
+                    $this->setIteratorClass($v);
+                    break;
+                case 'protectedProperties':
+                    continue;
+                default:
+                    $this->__set($k, $v);
+            }
+        }
+    }
+}

vendor/zendframework/zend-stdlib/src/ArraySerializableInterface.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+interface ArraySerializableInterface
+{
+    /**
+     * Exchange internal values from provided array
+     *
+     * @param  array $array
+     * @return void
+     */
+    public function exchangeArray(array $array);
+
+    /**
+     * Return an array representation of the object
+     *
+     * @return array
+     */
+    public function getArrayCopy();
+}

vendor/zendframework/zend-stdlib/src/ArrayStack.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use ArrayIterator;
+use ArrayObject as PhpArrayObject;
+
+/**
+ * ArrayObject that acts as a stack with regards to iteration
+ */
+class ArrayStack extends PhpArrayObject
+{
+    /**
+     * Retrieve iterator
+     *
+     * Retrieve an array copy of the object, reverse its order, and return an
+     * ArrayIterator with that reversed array.
+     *
+     * @return ArrayIterator
+     */
+    public function getIterator()
+    {
+        $array = $this->getArrayCopy();
+        return new ArrayIterator(array_reverse($array));
+    }
+}

vendor/zendframework/zend-stdlib/src/ArrayUtils.php

@@ -0,0 +1,335 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use Traversable;
+use Zend\Stdlib\ArrayUtils\MergeRemoveKey;
+use Zend\Stdlib\ArrayUtils\MergeReplaceKeyInterface;
+
+/**
+ * Utility class for testing and manipulation of PHP arrays.
+ *
+ * Declared abstract, as we have no need for instantiation.
+ */
+abstract class ArrayUtils
+{
+    /**
+     * Compatibility Flag for ArrayUtils::filter
+     */
+    const ARRAY_FILTER_USE_BOTH = 1;
+
+    /**
+     * Compatibility Flag for ArrayUtils::filter
+     */
+    const ARRAY_FILTER_USE_KEY  = 2;
+
+    /**
+     * Test whether an array contains one or more string keys
+     *
+     * @param  mixed $value
+     * @param  bool  $allowEmpty    Should an empty array() return true
+     * @return bool
+     */
+    public static function hasStringKeys($value, $allowEmpty = false)
+    {
+        if (!is_array($value)) {
+            return false;
+        }
+
+        if (!$value) {
+            return $allowEmpty;
+        }
+
+        return count(array_filter(array_keys($value), 'is_string')) > 0;
+    }
+
+    /**
+     * Test whether an array contains one or more integer keys
+     *
+     * @param  mixed $value
+     * @param  bool  $allowEmpty    Should an empty array() return true
+     * @return bool
+     */
+    public static function hasIntegerKeys($value, $allowEmpty = false)
+    {
+        if (!is_array($value)) {
+            return false;
+        }
+
+        if (!$value) {
+            return $allowEmpty;
+        }
+
+        return count(array_filter(array_keys($value), 'is_int')) > 0;
+    }
+
+    /**
+     * Test whether an array contains one or more numeric keys.
+     *
+     * A numeric key can be one of the following:
+     * - an integer 1,
+     * - a string with a number '20'
+     * - a string with negative number: '-1000'
+     * - a float: 2.2120, -78.150999
+     * - a string with float:  '4000.99999', '-10.10'
+     *
+     * @param  mixed $value
+     * @param  bool  $allowEmpty    Should an empty array() return true
+     * @return bool
+     */
+    public static function hasNumericKeys($value, $allowEmpty = false)
+    {
+        if (!is_array($value)) {
+            return false;
+        }
+
+        if (!$value) {
+            return $allowEmpty;
+        }
+
+        return count(array_filter(array_keys($value), 'is_numeric')) > 0;
+    }
+
+    /**
+     * Test whether an array is a list
+     *
+     * A list is a collection of values assigned to continuous integer keys
+     * starting at 0 and ending at count() - 1.
+     *
+     * For example:
+     * <code>
+     * $list = array('a', 'b', 'c', 'd');
+     * $list = array(
+     *     0 => 'foo',
+     *     1 => 'bar',
+     *     2 => array('foo' => 'baz'),
+     * );
+     * </code>
+     *
+     * @param  mixed $value
+     * @param  bool  $allowEmpty    Is an empty list a valid list?
+     * @return bool
+     */
+    public static function isList($value, $allowEmpty = false)
+    {
+        if (!is_array($value)) {
+            return false;
+        }
+
+        if (!$value) {
+            return $allowEmpty;
+        }
+
+        return (array_values($value) === $value);
+    }
+
+    /**
+     * Test whether an array is a hash table.
+     *
+     * An array is a hash table if:
+     *
+     * 1. Contains one or more non-integer keys, or
+     * 2. Integer keys are non-continuous or misaligned (not starting with 0)
+     *
+     * For example:
+     * <code>
+     * $hash = array(
+     *     'foo' => 15,
+     *     'bar' => false,
+     * );
+     * $hash = array(
+     *     1995  => 'Birth of PHP',
+     *     2009  => 'PHP 5.3.0',
+     *     2012  => 'PHP 5.4.0',
+     * );
+     * $hash = array(
+     *     'formElement,
+     *     'options' => array( 'debug' => true ),
+     * );
+     * </code>
+     *
+     * @param  mixed $value
+     * @param  bool  $allowEmpty    Is an empty array() a valid hash table?
+     * @return bool
+     */
+    public static function isHashTable($value, $allowEmpty = false)
+    {
+        if (!is_array($value)) {
+            return false;
+        }
+
+        if (!$value) {
+            return $allowEmpty;
+        }
+
+        return (array_values($value) !== $value);
+    }
+
+    /**
+     * Checks if a value exists in an array.
+     *
+     * Due to "foo" == 0 === TRUE with in_array when strict = false, an option
+     * has been added to prevent this. When $strict = 0/false, the most secure
+     * non-strict check is implemented. if $strict = -1, the default in_array
+     * non-strict behaviour is used.
+     *
+     * @param mixed $needle
+     * @param array $haystack
+     * @param int|bool $strict
+     * @return bool
+     */
+    public static function inArray($needle, array $haystack, $strict = false)
+    {
+        if (!$strict) {
+            if (is_int($needle) || is_float($needle)) {
+                $needle = (string) $needle;
+            }
+            if (is_string($needle)) {
+                foreach ($haystack as &$h) {
+                    if (is_int($h) || is_float($h)) {
+                        $h = (string) $h;
+                    }
+                }
+            }
+        }
+        return in_array($needle, $haystack, $strict);
+    }
+
+    /**
+     * Convert an iterator to an array.
+     *
+     * Converts an iterator to an array. The $recursive flag, on by default,
+     * hints whether or not you want to do so recursively.
+     *
+     * @param  array|Traversable  $iterator     The array or Traversable object to convert
+     * @param  bool               $recursive    Recursively check all nested structures
+     * @throws Exception\InvalidArgumentException if $iterator is not an array or a Traversable object
+     * @return array
+     */
+    public static function iteratorToArray($iterator, $recursive = true)
+    {
+        if (!is_array($iterator) && !$iterator instanceof Traversable) {
+            throw new Exception\InvalidArgumentException(__METHOD__ . ' expects an array or Traversable object');
+        }
+
+        if (!$recursive) {
+            if (is_array($iterator)) {
+                return $iterator;
+            }
+
+            return iterator_to_array($iterator);
+        }
+
+        if (method_exists($iterator, 'toArray')) {
+            return $iterator->toArray();
+        }
+
+        $array = [];
+        foreach ($iterator as $key => $value) {
+            if (is_scalar($value)) {
+                $array[$key] = $value;
+                continue;
+            }
+
+            if ($value instanceof Traversable) {
+                $array[$key] = static::iteratorToArray($value, $recursive);
+                continue;
+            }
+
+            if (is_array($value)) {
+                $array[$key] = static::iteratorToArray($value, $recursive);
+                continue;
+            }
+
+            $array[$key] = $value;
+        }
+
+        return $array;
+    }
+
+    /**
+     * Merge two arrays together.
+     *
+     * If an integer key exists in both arrays and preserveNumericKeys is false, the value
+     * from the second array will be appended to the first array. If both values are arrays, they
+     * are merged together, else the value of the second array overwrites the one of the first array.
+     *
+     * @param  array $a
+     * @param  array $b
+     * @param  bool  $preserveNumericKeys
+     * @return array
+     */
+    public static function merge(array $a, array $b, $preserveNumericKeys = false)
+    {
+        foreach ($b as $key => $value) {
+            if ($value instanceof MergeReplaceKeyInterface) {
+                $a[$key] = $value->getData();
+            } elseif (isset($a[$key]) || array_key_exists($key, $a)) {
+                if ($value instanceof MergeRemoveKey) {
+                    unset($a[$key]);
+                } elseif (!$preserveNumericKeys && is_int($key)) {
+                    $a[] = $value;
+                } elseif (is_array($value) && is_array($a[$key])) {
+                    $a[$key] = static::merge($a[$key], $value, $preserveNumericKeys);
+                } else {
+                    $a[$key] = $value;
+                }
+            } else {
+                if (!$value instanceof MergeRemoveKey) {
+                    $a[$key] = $value;
+                }
+            }
+        }
+
+        return $a;
+    }
+
+    /**
+     * Compatibility Method for array_filter on <5.6 systems
+     *
+     * @param array $data
+     * @param callable $callback
+     * @param null|int $flag
+     * @return array
+     */
+    public static function filter(array $data, $callback, $flag = null)
+    {
+        if (! is_callable($callback)) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Second parameter of %s must be callable',
+                __METHOD__
+            ));
+        }
+
+        if (version_compare(PHP_VERSION, '5.6.0') >= 0) {
+            return array_filter($data, $callback, $flag);
+        }
+
+        $output = [];
+        foreach ($data as $key => $value) {
+            $params = [$value];
+
+            if ($flag === static::ARRAY_FILTER_USE_BOTH) {
+                $params[] = $key;
+            }
+
+            if ($flag === static::ARRAY_FILTER_USE_KEY) {
+                $params = [$key];
+            }
+
+            $response = call_user_func_array($callback, $params);
+            if ($response) {
+                $output[$key] = $value;
+            }
+        }
+
+        return $output;
+    }
+}

vendor/zendframework/zend-stdlib/src/ArrayUtils/MergeRemoveKey.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\ArrayUtils;
+
+final class MergeRemoveKey
+{
+}

vendor/zendframework/zend-stdlib/src/ArrayUtils/MergeReplaceKey.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\ArrayUtils;
+
+final class MergeReplaceKey implements MergeReplaceKeyInterface
+{
+    /**
+     * @var mixed
+     */
+    protected $data;
+
+    /**
+     * @param mixed $data
+     */
+    public function __construct($data)
+    {
+        $this->data = $data;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getData()
+    {
+        return $this->data;
+    }
+}

vendor/zendframework/zend-stdlib/src/ArrayUtils/MergeReplaceKeyInterface.php

@@ -0,0 +1,21 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\ArrayUtils;
+
+/**
+ * Marker interface: can be used to replace keys completely in {@see ArrayUtils::merge()} operations
+ */
+interface MergeReplaceKeyInterface
+{
+    /**
+     * @return mixed
+     */
+    public function getData();
+}

vendor/zendframework/zend-stdlib/src/DispatchableInterface.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+interface DispatchableInterface
+{
+    /**
+     * Dispatch a request
+     *
+     * @param RequestInterface $request
+     * @param null|ResponseInterface $response
+     * @return Response|mixed
+     */
+    public function dispatch(RequestInterface $request, ResponseInterface $response = null);
+}

vendor/zendframework/zend-stdlib/src/ErrorHandler.php

@@ -0,0 +1,115 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use ErrorException;
+
+/**
+ * ErrorHandler that can be used to catch internal PHP errors
+ * and convert to an ErrorException instance.
+ */
+abstract class ErrorHandler
+{
+    /**
+     * Active stack
+     *
+     * @var array
+     */
+    protected static $stack = [];
+
+    /**
+     * Check if this error handler is active
+     *
+     * @return bool
+     */
+    public static function started()
+    {
+        return (bool) static::getNestedLevel();
+    }
+
+    /**
+     * Get the current nested level
+     *
+     * @return int
+     */
+    public static function getNestedLevel()
+    {
+        return count(static::$stack);
+    }
+
+    /**
+     * Starting the error handler
+     *
+     * @param int $errorLevel
+     */
+    public static function start($errorLevel = \E_WARNING)
+    {
+        if (!static::$stack) {
+            set_error_handler([get_called_class(), 'addError'], $errorLevel);
+        }
+
+        static::$stack[] = null;
+    }
+
+    /**
+     * Stopping the error handler
+     *
+     * @param  bool $throw Throw the ErrorException if any
+     * @return null|ErrorException
+     * @throws ErrorException If an error has been catched and $throw is true
+     */
+    public static function stop($throw = false)
+    {
+        $errorException = null;
+
+        if (static::$stack) {
+            $errorException = array_pop(static::$stack);
+
+            if (!static::$stack) {
+                restore_error_handler();
+            }
+
+            if ($errorException && $throw) {
+                throw $errorException;
+            }
+        }
+
+        return $errorException;
+    }
+
+    /**
+     * Stop all active handler
+     *
+     * @return void
+     */
+    public static function clean()
+    {
+        if (static::$stack) {
+            restore_error_handler();
+        }
+
+        static::$stack = [];
+    }
+
+    /**
+     * Add an error to the stack
+     *
+     * @param int    $errno
+     * @param string $errstr
+     * @param string $errfile
+     * @param int    $errline
+     * @return void
+     */
+    public static function addError($errno, $errstr = '', $errfile = '', $errline = 0)
+    {
+        $stack = & static::$stack[count(static::$stack) - 1];
+        $stack = new ErrorException($errstr, 0, $errno, $errfile, $errline, $stack);
+    }
+}

vendor/zendframework/zend-stdlib/src/Exception/BadMethodCallException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Exception;
+
+/**
+ * Bad method call exception
+ */
+class BadMethodCallException extends \BadMethodCallException implements ExceptionInterface
+{
+}

vendor/zendframework/zend-stdlib/src/Exception/DomainException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Exception;
+
+/**
+ * Domain exception
+ */
+class DomainException extends \DomainException implements ExceptionInterface
+{
+}

vendor/zendframework/zend-stdlib/src/Exception/ExceptionInterface.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Exception;
+
+/**
+ * Exception marker interface
+ */
+interface ExceptionInterface
+{
+}

vendor/zendframework/zend-stdlib/src/Exception/ExtensionNotLoadedException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Exception;
+
+/**
+ * Extension not loaded exception
+ */
+class ExtensionNotLoadedException extends RuntimeException
+{
+}

vendor/zendframework/zend-stdlib/src/Exception/InvalidArgumentException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Exception;
+
+/**
+ * Invalid Argument Exception
+ */
+class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
+{
+}

vendor/zendframework/zend-stdlib/src/Exception/LogicException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Exception;
+
+/**
+ * Logic exception
+ */
+class LogicException extends \LogicException implements ExceptionInterface
+{
+}

vendor/zendframework/zend-stdlib/src/Exception/RuntimeException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Exception;
+
+/**
+ * Runtime exception
+ */
+class RuntimeException extends \RuntimeException implements ExceptionInterface
+{
+}

vendor/zendframework/zend-stdlib/src/FastPriorityQueue.php

@@ -0,0 +1,343 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use Iterator;
+use Countable;
+use Serializable;
+use SplPriorityQueue as PhpSplPriorityQueue;
+
+/**
+ * This is an efficient implementation of an integer priority queue in PHP
+ *
+ * This class acts like a queue with insert() and extract(), removing the
+ * elements from the queue and it also acts like an Iterator without removing
+ * the elements. This behaviour can be used in mixed scenarios with high
+ * performance boost.
+ */
+class FastPriorityQueue implements Iterator, Countable, Serializable
+{
+    const EXTR_DATA     = PhpSplPriorityQueue::EXTR_DATA;
+    const EXTR_PRIORITY = PhpSplPriorityQueue::EXTR_PRIORITY;
+    const EXTR_BOTH     = PhpSplPriorityQueue::EXTR_BOTH;
+
+    /**
+     * @var integer
+     */
+    protected $extractFlag = self::EXTR_DATA;
+
+    /**
+     * Elements of the queue, divided by priorities
+     *
+     * @var array
+     */
+    protected $values = [];
+
+    /**
+     * Array of priorities
+     *
+     * @var array
+     */
+    protected $priorities = [];
+
+    /**
+     * Array of priorities used for the iteration
+     *
+     * @var array
+     */
+    protected $subPriorities = [];
+
+    /**
+     * Max priority
+     *
+     * @var integer
+     */
+    protected $maxPriority = 0;
+
+    /**
+     * Total number of elements in the queue
+     *
+     * @var integer
+     */
+    protected $count = 0;
+
+    /**
+     * Index of the current element in the queue
+     *
+     * @var integer
+     */
+    protected $index = 0;
+
+    /**
+     * Sub index of the current element in the same priority level
+     *
+     * @var integer
+     */
+    protected $subIndex = 0;
+
+    /**
+     * Insert an element in the queue with a specified priority
+     *
+     * @param mixed $value
+     * @param integer $priority a positive integer
+     */
+    public function insert($value, $priority)
+    {
+        if (! is_int($priority)) {
+            throw new Exception\InvalidArgumentException('The priority must be an integer');
+        }
+        $this->values[$priority][] = $value;
+        if (! isset($this->priorities[$priority])) {
+            $this->priorities[$priority] = $priority;
+            $this->maxPriority           = max($priority, $this->maxPriority);
+        }
+        ++$this->count;
+    }
+
+    /**
+     * Extract an element in the queue according to the priority and the
+     * order of insertion
+     *
+     * @return mixed
+     */
+    public function extract()
+    {
+        if (! $this->valid()) {
+            return false;
+        }
+        $value = $this->current();
+        $this->nextAndRemove();
+        return $value;
+    }
+
+    /**
+     * Remove an item from the queue
+     *
+     * This is different than {@link extract()}; its purpose is to dequeue an
+     * item.
+     *
+     * Note: this removes the first item matching the provided item found. If
+     * the same item has been added multiple times, it will not remove other
+     * instances.
+     *
+     * @param  mixed $datum
+     * @return bool False if the item was not found, true otherwise.
+     */
+    public function remove($datum)
+    {
+        $this->rewind();
+        while ($this->valid()) {
+            if (current($this->values[$this->maxPriority]) === $datum) {
+                $index = key($this->values[$this->maxPriority]);
+                unset($this->values[$this->maxPriority][$index]);
+                --$this->count;
+                return true;
+            }
+            $this->next();
+        }
+        return false;
+    }
+
+    /**
+     * Get the total number of elements in the queue
+     *
+     * @return integer
+     */
+    public function count()
+    {
+        return $this->count;
+    }
+
+    /**
+     * Get the current element in the queue
+     *
+     * @return mixed
+     */
+    public function current()
+    {
+        switch ($this->extractFlag) {
+            case self::EXTR_DATA:
+                return current($this->values[$this->maxPriority]);
+            case self::EXTR_PRIORITY:
+                return $this->maxPriority;
+            case self::EXTR_BOTH:
+                return [
+                    'data'     => current($this->values[$this->maxPriority]),
+                    'priority' => $this->maxPriority
+                ];
+        }
+    }
+
+    /**
+     * Get the index of the current element in the queue
+     *
+     * @return integer
+     */
+    public function key()
+    {
+        return $this->index;
+    }
+
+    /**
+     * Set the iterator pointer to the next element in the queue
+     * removing the previous element
+     */
+    protected function nextAndRemove()
+    {
+        if (false === next($this->values[$this->maxPriority])) {
+            unset($this->priorities[$this->maxPriority]);
+            unset($this->values[$this->maxPriority]);
+            $this->maxPriority = empty($this->priorities) ? 0 : max($this->priorities);
+            $this->subIndex    = -1;
+        }
+        ++$this->index;
+        ++$this->subIndex;
+        --$this->count;
+    }
+
+    /**
+     * Set the iterator pointer to the next element in the queue
+     * without removing the previous element
+     */
+    public function next()
+    {
+        if (false === next($this->values[$this->maxPriority])) {
+            unset($this->subPriorities[$this->maxPriority]);
+            reset($this->values[$this->maxPriority]);
+            $this->maxPriority = empty($this->subPriorities) ? 0 : max($this->subPriorities);
+            $this->subIndex    = -1;
+        }
+        ++$this->index;
+        ++$this->subIndex;
+    }
+
+    /**
+     * Check if the current iterator is valid
+     *
+     * @return boolean
+     */
+    public function valid()
+    {
+        return isset($this->values[$this->maxPriority]);
+    }
+
+    /**
+     * Rewind the current iterator
+     */
+    public function rewind()
+    {
+        $this->subPriorities = $this->priorities;
+        $this->maxPriority   = empty($this->priorities) ? 0 : max($this->priorities);
+        $this->index         = 0;
+        $this->subIndex      = 0;
+    }
+
+    /**
+     * Serialize to an array
+     *
+     * Array will be priority => data pairs
+     *
+     * @return array
+     */
+    public function toArray()
+    {
+        $array = [];
+        foreach (clone $this as $item) {
+            $array[] = $item;
+        }
+        return $array;
+    }
+
+    /**
+     * Serialize
+     *
+     * @return string
+     */
+    public function serialize()
+    {
+        $clone = clone $this;
+        $clone->setExtractFlags(self::EXTR_BOTH);
+
+        $data = [];
+        foreach ($clone as $item) {
+            $data[] = $item;
+        }
+
+        return serialize($data);
+    }
+
+    /**
+     * Deserialize
+     *
+     * @param  string $data
+     * @return void
+     */
+    public function unserialize($data)
+    {
+        foreach (unserialize($data) as $item) {
+            $this->insert($item['data'], $item['priority']);
+        }
+    }
+
+    /**
+     * Set the extract flag
+     *
+     * @param integer $flag
+     */
+    public function setExtractFlags($flag)
+    {
+        switch ($flag) {
+            case self::EXTR_DATA:
+            case self::EXTR_PRIORITY:
+            case self::EXTR_BOTH:
+                $this->extractFlag = $flag;
+                break;
+            default:
+                throw new Exception\InvalidArgumentException("The extract flag specified is not valid");
+        }
+    }
+
+    /**
+     * Check if the queue is empty
+     *
+     * @return boolean
+     */
+    public function isEmpty()
+    {
+        return empty($this->values);
+    }
+
+    /**
+     * Does the queue contain the given datum?
+     *
+     * @param  mixed $datum
+     * @return bool
+     */
+    public function contains($datum)
+    {
+        foreach ($this->values as $values) {
+            if (in_array($datum, $values)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Does the queue have an item with the given priority?
+     *
+     * @param  int $priority
+     * @return bool
+     */
+    public function hasPriority($priority)
+    {
+        return isset($this->values[$priority]);
+    }
+}

vendor/zendframework/zend-stdlib/src/Glob.php

@@ -0,0 +1,202 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+/**
+ * Wrapper for glob with fallback if GLOB_BRACE is not available.
+ */
+abstract class Glob
+{
+    /**#@+
+     * Glob constants.
+     */
+    const GLOB_MARK     = 0x01;
+    const GLOB_NOSORT   = 0x02;
+    const GLOB_NOCHECK  = 0x04;
+    const GLOB_NOESCAPE = 0x08;
+    const GLOB_BRACE    = 0x10;
+    const GLOB_ONLYDIR  = 0x20;
+    const GLOB_ERR      = 0x40;
+    /**#@-*/
+
+    /**
+     * Find pathnames matching a pattern.
+     *
+     * @see    http://docs.php.net/glob
+     * @param  string  $pattern
+     * @param  int $flags
+     * @param  bool $forceFallback
+     * @return array
+     * @throws Exception\RuntimeException
+     */
+    public static function glob($pattern, $flags = 0, $forceFallback = false)
+    {
+        if (!defined('GLOB_BRACE') || $forceFallback) {
+            return static::fallbackGlob($pattern, $flags);
+        }
+
+        return static::systemGlob($pattern, $flags);
+    }
+
+    /**
+     * Use the glob function provided by the system.
+     *
+     * @param  string  $pattern
+     * @param  int     $flags
+     * @return array
+     * @throws Exception\RuntimeException
+     */
+    protected static function systemGlob($pattern, $flags)
+    {
+        if ($flags) {
+            $flagMap = [
+                self::GLOB_MARK     => GLOB_MARK,
+                self::GLOB_NOSORT   => GLOB_NOSORT,
+                self::GLOB_NOCHECK  => GLOB_NOCHECK,
+                self::GLOB_NOESCAPE => GLOB_NOESCAPE,
+                self::GLOB_BRACE    => defined('GLOB_BRACE') ? GLOB_BRACE : 0,
+                self::GLOB_ONLYDIR  => GLOB_ONLYDIR,
+                self::GLOB_ERR      => GLOB_ERR,
+            ];
+
+            $globFlags = 0;
+
+            foreach ($flagMap as $internalFlag => $globFlag) {
+                if ($flags & $internalFlag) {
+                    $globFlags |= $globFlag;
+                }
+            }
+        } else {
+            $globFlags = 0;
+        }
+
+        ErrorHandler::start();
+        $res = glob($pattern, $globFlags);
+        $err = ErrorHandler::stop();
+        if ($res === false) {
+            throw new Exception\RuntimeException("glob('{$pattern}', {$globFlags}) failed", 0, $err);
+        }
+        return $res;
+    }
+
+    /**
+     * Expand braces manually, then use the system glob.
+     *
+     * @param  string  $pattern
+     * @param  int     $flags
+     * @return array
+     * @throws Exception\RuntimeException
+     */
+    protected static function fallbackGlob($pattern, $flags)
+    {
+        if (!$flags & self::GLOB_BRACE) {
+            return static::systemGlob($pattern, $flags);
+        }
+
+        $flags &= ~self::GLOB_BRACE;
+        $length = strlen($pattern);
+        $paths  = [];
+
+        if ($flags & self::GLOB_NOESCAPE) {
+            $begin = strpos($pattern, '{');
+        } else {
+            $begin = 0;
+
+            while (true) {
+                if ($begin === $length) {
+                    $begin = false;
+                    break;
+                } elseif ($pattern[$begin] === '\\' && ($begin + 1) < $length) {
+                    $begin++;
+                } elseif ($pattern[$begin] === '{') {
+                    break;
+                }
+
+                $begin++;
+            }
+        }
+
+        if ($begin === false) {
+            return static::systemGlob($pattern, $flags);
+        }
+
+        $next = static::nextBraceSub($pattern, $begin + 1, $flags);
+
+        if ($next === null) {
+            return static::systemGlob($pattern, $flags);
+        }
+
+        $rest = $next;
+
+        while ($pattern[$rest] !== '}') {
+            $rest = static::nextBraceSub($pattern, $rest + 1, $flags);
+
+            if ($rest === null) {
+                return static::systemGlob($pattern, $flags);
+            }
+        }
+
+        $p = $begin + 1;
+
+        while (true) {
+            $subPattern = substr($pattern, 0, $begin)
+                        . substr($pattern, $p, $next - $p)
+                        . substr($pattern, $rest + 1);
+
+            $result = static::fallbackGlob($subPattern, $flags | self::GLOB_BRACE);
+
+            if ($result) {
+                $paths = array_merge($paths, $result);
+            }
+
+            if ($pattern[$next] === '}') {
+                break;
+            }
+
+            $p    = $next + 1;
+            $next = static::nextBraceSub($pattern, $p, $flags);
+        }
+
+        return array_unique($paths);
+    }
+
+    /**
+     * Find the end of the sub-pattern in a brace expression.
+     *
+     * @param  string  $pattern
+     * @param  int $begin
+     * @param  int $flags
+     * @return int|null
+     */
+    protected static function nextBraceSub($pattern, $begin, $flags)
+    {
+        $length  = strlen($pattern);
+        $depth   = 0;
+        $current = $begin;
+
+        while ($current < $length) {
+            if (!$flags & self::GLOB_NOESCAPE && $pattern[$current] === '\\') {
+                if (++$current === $length) {
+                    break;
+                }
+
+                $current++;
+            } else {
+                if (($pattern[$current] === '}' && $depth-- === 0) || ($pattern[$current] === ',' && $depth === 0)) {
+                    break;
+                } elseif ($pattern[$current++] === '{') {
+                    $depth++;
+                }
+            }
+        }
+
+        return ($current < $length ? $current : null);
+    }
+}

vendor/zendframework/zend-stdlib/src/Guard/AllGuardsTrait.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Guard;
+
+/**
+ * An aggregate for all guard traits
+ */
+trait AllGuardsTrait
+{
+    use ArrayOrTraversableGuardTrait;
+    use EmptyGuardTrait;
+    use NullGuardTrait;
+}

vendor/zendframework/zend-stdlib/src/Guard/ArrayOrTraversableGuardTrait.php

@@ -0,0 +1,41 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Guard;
+
+use Traversable;
+
+/**
+ * Provide a guard method for array or Traversable data
+ */
+trait ArrayOrTraversableGuardTrait
+{
+    /**
+     * Verifies that the data is an array or Traversable
+     *
+     * @param  mixed  $data           the data to verify
+     * @param  string $dataName       the data name
+     * @param  string $exceptionClass FQCN for the exception
+     * @throws \Exception
+     */
+    protected function guardForArrayOrTraversable(
+        $data,
+        $dataName = 'Argument',
+        $exceptionClass = 'Zend\Stdlib\Exception\InvalidArgumentException'
+    ) {
+        if (!is_array($data) && !($data instanceof Traversable)) {
+            $message = sprintf(
+                "%s must be an array or Traversable, [%s] given",
+                $dataName,
+                is_object($data) ? get_class($data) : gettype($data)
+            );
+            throw new $exceptionClass($message);
+        }
+    }
+}

vendor/zendframework/zend-stdlib/src/Guard/EmptyGuardTrait.php

@@ -0,0 +1,35 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Guard;
+
+/**
+ * Provide a guard method against empty data
+ */
+trait EmptyGuardTrait
+{
+    /**
+     * Verify that the data is not empty
+     *
+     * @param  mixed  $data           the data to verify
+     * @param  string $dataName       the data name
+     * @param  string $exceptionClass FQCN for the exception
+     * @throws \Exception
+     */
+    protected function guardAgainstEmpty(
+        $data,
+        $dataName = 'Argument',
+        $exceptionClass = 'Zend\Stdlib\Exception\InvalidArgumentException'
+    ) {
+        if (empty($data)) {
+            $message = sprintf('%s cannot be empty', $dataName);
+            throw new $exceptionClass($message);
+        }
+    }
+}

vendor/zendframework/zend-stdlib/src/Guard/NullGuardTrait.php

@@ -0,0 +1,35 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\Guard;
+
+/**
+ * Provide a guard method against null data
+ */
+trait NullGuardTrait
+{
+    /**
+     * Verify that the data is not null
+     *
+     * @param  mixed  $data           the data to verify
+     * @param  string $dataName       the data name
+     * @param  string $exceptionClass FQCN for the exception
+     * @throws \Exception
+     */
+    protected function guardAgainstNull(
+        $data,
+        $dataName = 'Argument',
+        $exceptionClass = 'Zend\Stdlib\Exception\InvalidArgumentException'
+    ) {
+        if (null === $data) {
+            $message = sprintf('%s cannot be null', $dataName);
+            throw new $exceptionClass($message);
+        }
+    }
+}

vendor/zendframework/zend-stdlib/src/InitializableInterface.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+/**
+ * Interface to allow objects to have initialization logic
+ */
+interface InitializableInterface
+{
+    /**
+     * Init an object
+     *
+     * @return void
+     */
+    public function init();
+}

vendor/zendframework/zend-stdlib/src/JsonSerializable.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+interface JsonSerializable extends \JsonSerializable
+{
+}

vendor/zendframework/zend-stdlib/src/Message.php

@@ -0,0 +1,118 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use Traversable;
+
+class Message implements MessageInterface
+{
+    /**
+     * @var array
+     */
+    protected $metadata = [];
+
+    /**
+     * @var string
+     */
+    protected $content = '';
+
+    /**
+     * Set message metadata
+     *
+     * Non-destructive setting of message metadata; always adds to the metadata, never overwrites
+     * the entire metadata container.
+     *
+     * @param  string|int|array|Traversable $spec
+     * @param  mixed $value
+     * @throws Exception\InvalidArgumentException
+     * @return Message
+     */
+    public function setMetadata($spec, $value = null)
+    {
+        if (is_scalar($spec)) {
+            $this->metadata[$spec] = $value;
+            return $this;
+        }
+        if (!is_array($spec) && !$spec instanceof Traversable) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Expected a string, array, or Traversable argument in first position; received "%s"',
+                (is_object($spec) ? get_class($spec) : gettype($spec))
+            ));
+        }
+        foreach ($spec as $key => $value) {
+            $this->metadata[$key] = $value;
+        }
+        return $this;
+    }
+
+    /**
+     * Retrieve all metadata or a single metadatum as specified by key
+     *
+     * @param  null|string|int $key
+     * @param  null|mixed $default
+     * @throws Exception\InvalidArgumentException
+     * @return mixed
+     */
+    public function getMetadata($key = null, $default = null)
+    {
+        if (null === $key) {
+            return $this->metadata;
+        }
+
+        if (!is_scalar($key)) {
+            throw new Exception\InvalidArgumentException('Non-scalar argument provided for key');
+        }
+
+        if (array_key_exists($key, $this->metadata)) {
+            return $this->metadata[$key];
+        }
+
+        return $default;
+    }
+
+    /**
+     * Set message content
+     *
+     * @param  mixed $value
+     * @return Message
+     */
+    public function setContent($value)
+    {
+        $this->content = $value;
+        return $this;
+    }
+
+    /**
+     * Get message content
+     *
+     * @return mixed
+     */
+    public function getContent()
+    {
+        return $this->content;
+    }
+
+    /**
+     * @return string
+     */
+    public function toString()
+    {
+        $request = '';
+        foreach ($this->getMetadata() as $key => $value) {
+            $request .= sprintf(
+                "%s: %s\r\n",
+                (string) $key,
+                (string) $value
+            );
+        }
+        $request .= "\r\n" . $this->getContent();
+        return $request;
+    }
+}

vendor/zendframework/zend-stdlib/src/MessageInterface.php

@@ -0,0 +1,44 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+interface MessageInterface
+{
+    /**
+     * Set metadata
+     *
+     * @param  string|int|array|\Traversable $spec
+     * @param  mixed $value
+     */
+    public function setMetadata($spec, $value = null);
+
+    /**
+     * Get metadata
+     *
+     * @param  null|string|int $key
+     * @return mixed
+     */
+    public function getMetadata($key = null);
+
+    /**
+     * Set content
+     *
+     * @param  mixed $content
+     * @return mixed
+     */
+    public function setContent($content);
+
+    /**
+     * Get content
+     *
+     * @return mixed
+     */
+    public function getContent();
+}

vendor/zendframework/zend-stdlib/src/ParameterObjectInterface.php

@@ -0,0 +1,38 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+interface ParameterObjectInterface
+{
+    /**
+     * @param string $key
+     * @param mixed $value
+     * @return void
+     */
+    public function __set($key, $value);
+
+    /**
+     * @param string $key
+     * @return mixed
+     */
+    public function __get($key);
+
+    /**
+     * @param string $key
+     * @return bool
+     */
+    public function __isset($key);
+
+    /**
+     * @param string $key
+     * @return void
+     */
+    public function __unset($key);
+}

vendor/zendframework/zend-stdlib/src/Parameters.php

@@ -0,0 +1,115 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use ArrayObject as PhpArrayObject;
+
+class Parameters extends PhpArrayObject implements ParametersInterface
+{
+    /**
+     * Constructor
+     *
+     * Enforces that we have an array, and enforces parameter access to array
+     * elements.
+     *
+     * @param  array $values
+     */
+    public function __construct(array $values = null)
+    {
+        if (null === $values) {
+            $values = [];
+        }
+        parent::__construct($values, ArrayObject::ARRAY_AS_PROPS);
+    }
+
+    /**
+     * Populate from native PHP array
+     *
+     * @param  array $values
+     * @return void
+     */
+    public function fromArray(array $values)
+    {
+        $this->exchangeArray($values);
+    }
+
+    /**
+     * Populate from query string
+     *
+     * @param  string $string
+     * @return void
+     */
+    public function fromString($string)
+    {
+        $array = [];
+        parse_str($string, $array);
+        $this->fromArray($array);
+    }
+
+    /**
+     * Serialize to native PHP array
+     *
+     * @return array
+     */
+    public function toArray()
+    {
+        return $this->getArrayCopy();
+    }
+
+    /**
+     * Serialize to query string
+     *
+     * @return string
+     */
+    public function toString()
+    {
+        return http_build_query($this);
+    }
+
+    /**
+     * Retrieve by key
+     *
+     * Returns null if the key does not exist.
+     *
+     * @param  string $name
+     * @return mixed
+     */
+    public function offsetGet($name)
+    {
+        if ($this->offsetExists($name)) {
+            return parent::offsetGet($name);
+        }
+        return;
+    }
+
+    /**
+     * @param string $name
+     * @param mixed $default optional default value
+     * @return mixed
+     */
+    public function get($name, $default = null)
+    {
+        if ($this->offsetExists($name)) {
+            return parent::offsetGet($name);
+        }
+        return $default;
+    }
+
+    /**
+     * @param string $name
+     * @param mixed $value
+     * @return Parameters
+     */
+    public function set($name, $value)
+    {
+        $this[$name] = $value;
+        return $this;
+    }
+}

vendor/zendframework/zend-stdlib/src/ParametersInterface.php

@@ -0,0 +1,86 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use ArrayAccess;
+use Countable;
+use Serializable;
+use Traversable;
+
+/*
+ * Basically, an ArrayObject. You could simply define something like:
+ *     class QueryParams extends ArrayObject implements Parameters {}
+ * and have 90% of the functionality
+ */
+interface ParametersInterface extends ArrayAccess, Countable, Serializable, Traversable
+{
+    /**
+     * Constructor
+     *
+     * @param array $values
+     */
+    public function __construct(array $values = null);
+
+    /**
+     * From array
+     *
+     * Allow deserialization from standard array
+     *
+     * @param array $values
+     * @return mixed
+     */
+    public function fromArray(array $values);
+
+    /**
+     * From string
+     *
+     * Allow deserialization from raw body; e.g., for PUT requests
+     *
+     * @param $string
+     * @return mixed
+     */
+    public function fromString($string);
+
+    /**
+     * To array
+     *
+     * Allow serialization back to standard array
+     *
+     * @return mixed
+     */
+    public function toArray();
+
+    /**
+     * To string
+     *
+     * Allow serialization to query format; e.g., for PUT or POST requests
+     *
+     * @return mixed
+     */
+    public function toString();
+
+    /**
+     * Get
+     *
+     * @param string $name
+     * @param mixed|null $default
+     * @return mixed
+     */
+    public function get($name, $default = null);
+
+    /**
+     * Set
+     *
+     * @param string $name
+     * @param mixed $value
+     * @return ParametersInterface
+     */
+    public function set($name, $value);
+}

vendor/zendframework/zend-stdlib/src/PriorityList.php

@@ -0,0 +1,274 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use Countable;
+use Iterator;
+
+class PriorityList implements Iterator, Countable
+{
+    const EXTR_DATA     = 0x00000001;
+    const EXTR_PRIORITY = 0x00000002;
+    const EXTR_BOTH     = 0x00000003;
+    /**
+     * Internal list of all items.
+     *
+     * @var array[]
+     */
+    protected $items = [];
+
+    /**
+     * Serial assigned to items to preserve LIFO.
+     *
+     * @var int
+     */
+    protected $serial = 0;
+
+    /**
+     * Serial order mode
+     * @var integer
+     */
+    protected $isLIFO = 1;
+
+    /**
+     * Internal counter to avoid usage of count().
+     *
+     * @var int
+     */
+    protected $count = 0;
+
+    /**
+     * Whether the list was already sorted.
+     *
+     * @var bool
+     */
+    protected $sorted = false;
+
+    /**
+     * Insert a new item.
+     *
+     * @param  string  $name
+     * @param  mixed   $value
+     * @param  int     $priority
+     *
+     * @return void
+     */
+    public function insert($name, $value, $priority = 0)
+    {
+        if (!isset($this->items[$name])) {
+            $this->count++;
+        }
+
+        $this->sorted = false;
+
+        $this->items[$name] = [
+            'data'     => $value,
+            'priority' => (int) $priority,
+            'serial'   => $this->serial++,
+        ];
+    }
+
+    /**
+     * @param string $name
+     * @param int    $priority
+     *
+     * @return $this
+     *
+     * @throws \Exception
+     */
+    public function setPriority($name, $priority)
+    {
+        if (!isset($this->items[$name])) {
+            throw new \Exception("item $name not found");
+        }
+
+        $this->items[$name]['priority'] = (int) $priority;
+        $this->sorted                   = false;
+
+        return $this;
+    }
+
+    /**
+     * Remove a item.
+     *
+     * @param  string $name
+     * @return void
+     */
+    public function remove($name)
+    {
+        if (isset($this->items[$name])) {
+            $this->count--;
+        }
+
+        unset($this->items[$name]);
+    }
+
+    /**
+     * Remove all items.
+     *
+     * @return void
+     */
+    public function clear()
+    {
+        $this->items  = [];
+        $this->serial = 0;
+        $this->count  = 0;
+        $this->sorted = false;
+    }
+
+    /**
+     * Get a item.
+     *
+     * @param  string $name
+     * @return mixed
+     */
+    public function get($name)
+    {
+        if (!isset($this->items[$name])) {
+            return;
+        }
+
+        return $this->items[$name]['data'];
+    }
+
+    /**
+     * Sort all items.
+     *
+     * @return void
+     */
+    protected function sort()
+    {
+        if (!$this->sorted) {
+            uasort($this->items, [$this, 'compare']);
+            $this->sorted = true;
+        }
+    }
+
+    /**
+     * Compare the priority of two items.
+     *
+     * @param  array $item1,
+     * @param  array $item2
+     * @return int
+     */
+    protected function compare(array $item1, array $item2)
+    {
+        return ($item1['priority'] === $item2['priority'])
+            ? ($item1['serial']   > $item2['serial']   ? -1 : 1) * $this->isLIFO
+            : ($item1['priority'] > $item2['priority'] ? -1 : 1);
+    }
+
+    /**
+     * Get/Set serial order mode
+     *
+     * @param bool|null $flag
+     *
+     * @return bool
+     */
+    public function isLIFO($flag = null)
+    {
+        if ($flag !== null) {
+            $isLifo = $flag === true ? 1 : -1;
+
+            if ($isLifo !== $this->isLIFO) {
+                $this->isLIFO = $isLifo;
+                $this->sorted = false;
+            }
+        }
+
+        return 1 === $this->isLIFO;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function rewind()
+    {
+        $this->sort();
+        reset($this->items);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function current()
+    {
+        $this->sorted || $this->sort();
+        $node = current($this->items);
+
+        return $node ? $node['data'] : false;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function key()
+    {
+        $this->sorted || $this->sort();
+        return key($this->items);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function next()
+    {
+        $node = next($this->items);
+
+        return $node ? $node['data'] : false;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function valid()
+    {
+        return current($this->items) !== false;
+    }
+
+    /**
+     * @return self
+     */
+    public function getIterator()
+    {
+        return clone $this;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function count()
+    {
+        return $this->count;
+    }
+
+    /**
+     * Return list as array
+     *
+     * @param int $flag
+     *
+     * @return array
+     */
+    public function toArray($flag = self::EXTR_DATA)
+    {
+        $this->sort();
+
+        if ($flag == self::EXTR_BOTH) {
+            return $this->items;
+        }
+
+        return array_map(
+            function ($item) use ($flag) {
+                return ($flag == PriorityList::EXTR_PRIORITY) ? $item['priority'] : $item['data'];
+            },
+            $this->items
+        );
+    }
+}

vendor/zendframework/zend-stdlib/src/PriorityQueue.php

@@ -0,0 +1,301 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use Countable;
+use IteratorAggregate;
+use Serializable;
+
+/**
+ * Re-usable, serializable priority queue implementation
+ *
+ * SplPriorityQueue acts as a heap; on iteration, each item is removed from the
+ * queue. If you wish to re-use such a queue, you need to clone it first. This
+ * makes for some interesting issues if you wish to delete items from the queue,
+ * or, as already stated, iterate over it multiple times.
+ *
+ * This class aggregates items for the queue itself, but also composes an
+ * "inner" iterator in the form of an SplPriorityQueue object for performing
+ * the actual iteration.
+ */
+class PriorityQueue implements Countable, IteratorAggregate, Serializable
+{
+    const EXTR_DATA     = 0x00000001;
+    const EXTR_PRIORITY = 0x00000002;
+    const EXTR_BOTH     = 0x00000003;
+
+    /**
+     * Inner queue class to use for iteration
+     * @var string
+     */
+    protected $queueClass = 'Zend\Stdlib\SplPriorityQueue';
+
+    /**
+     * Actual items aggregated in the priority queue. Each item is an array
+     * with keys "data" and "priority".
+     * @var array
+     */
+    protected $items      = [];
+
+    /**
+     * Inner queue object
+     * @var SplPriorityQueue
+     */
+    protected $queue;
+
+    /**
+     * Insert an item into the queue
+     *
+     * Priority defaults to 1 (low priority) if none provided.
+     *
+     * @param  mixed $data
+     * @param  int $priority
+     * @return PriorityQueue
+     */
+    public function insert($data, $priority = 1)
+    {
+        $priority = (int) $priority;
+        $this->items[] = [
+            'data'     => $data,
+            'priority' => $priority,
+        ];
+        $this->getQueue()->insert($data, $priority);
+        return $this;
+    }
+
+    /**
+     * Remove an item from the queue
+     *
+     * This is different than {@link extract()}; its purpose is to dequeue an
+     * item.
+     *
+     * This operation is potentially expensive, as it requires
+     * re-initialization and re-population of the inner queue.
+     *
+     * Note: this removes the first item matching the provided item found. If
+     * the same item has been added multiple times, it will not remove other
+     * instances.
+     *
+     * @param  mixed $datum
+     * @return bool False if the item was not found, true otherwise.
+     */
+    public function remove($datum)
+    {
+        $found = false;
+        foreach ($this->items as $key => $item) {
+            if ($item['data'] === $datum) {
+                $found = true;
+                break;
+            }
+        }
+        if ($found) {
+            unset($this->items[$key]);
+            $this->queue = null;
+
+            if (!$this->isEmpty()) {
+                $queue = $this->getQueue();
+                foreach ($this->items as $item) {
+                    $queue->insert($item['data'], $item['priority']);
+                }
+            }
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Is the queue empty?
+     *
+     * @return bool
+     */
+    public function isEmpty()
+    {
+        return (0 === $this->count());
+    }
+
+    /**
+     * How many items are in the queue?
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->items);
+    }
+
+    /**
+     * Peek at the top node in the queue, based on priority.
+     *
+     * @return mixed
+     */
+    public function top()
+    {
+        return $this->getIterator()->top();
+    }
+
+    /**
+     * Extract a node from the inner queue and sift up
+     *
+     * @return mixed
+     */
+    public function extract()
+    {
+        return $this->getQueue()->extract();
+    }
+
+    /**
+     * Retrieve the inner iterator
+     *
+     * SplPriorityQueue acts as a heap, which typically implies that as items
+     * are iterated, they are also removed. This does not work for situations
+     * where the queue may be iterated multiple times. As such, this class
+     * aggregates the values, and also injects an SplPriorityQueue. This method
+     * retrieves the inner queue object, and clones it for purposes of
+     * iteration.
+     *
+     * @return SplPriorityQueue
+     */
+    public function getIterator()
+    {
+        $queue = $this->getQueue();
+        return clone $queue;
+    }
+
+    /**
+     * Serialize the data structure
+     *
+     * @return string
+     */
+    public function serialize()
+    {
+        return serialize($this->items);
+    }
+
+    /**
+     * Unserialize a string into a PriorityQueue object
+     *
+     * Serialization format is compatible with {@link Zend\Stdlib\SplPriorityQueue}
+     *
+     * @param  string $data
+     * @return void
+     */
+    public function unserialize($data)
+    {
+        foreach (unserialize($data) as $item) {
+            $this->insert($item['data'], $item['priority']);
+        }
+    }
+
+    /**
+     * Serialize to an array
+     *
+     * By default, returns only the item data, and in the order registered (not
+     * sorted). You may provide one of the EXTR_* flags as an argument, allowing
+     * the ability to return priorities or both data and priority.
+     *
+     * @param  int $flag
+     * @return array
+     */
+    public function toArray($flag = self::EXTR_DATA)
+    {
+        switch ($flag) {
+            case self::EXTR_BOTH:
+                return $this->items;
+            case self::EXTR_PRIORITY:
+                return array_map(function ($item) {
+                    return $item['priority'];
+                }, $this->items);
+            case self::EXTR_DATA:
+            default:
+                return array_map(function ($item) {
+                    return $item['data'];
+                }, $this->items);
+        }
+    }
+
+    /**
+     * Specify the internal queue class
+     *
+     * Please see {@link getIterator()} for details on the necessity of an
+     * internal queue class. The class provided should extend SplPriorityQueue.
+     *
+     * @param  string $class
+     * @return PriorityQueue
+     */
+    public function setInternalQueueClass($class)
+    {
+        $this->queueClass = (string) $class;
+        return $this;
+    }
+
+    /**
+     * Does the queue contain the given datum?
+     *
+     * @param  mixed $datum
+     * @return bool
+     */
+    public function contains($datum)
+    {
+        foreach ($this->items as $item) {
+            if ($item['data'] === $datum) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Does the queue have an item with the given priority?
+     *
+     * @param  int $priority
+     * @return bool
+     */
+    public function hasPriority($priority)
+    {
+        foreach ($this->items as $item) {
+            if ($item['priority'] === $priority) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Get the inner priority queue instance
+     *
+     * @throws Exception\DomainException
+     * @return SplPriorityQueue
+     */
+    protected function getQueue()
+    {
+        if (null === $this->queue) {
+            $this->queue = new $this->queueClass();
+            if (!$this->queue instanceof \SplPriorityQueue) {
+                throw new Exception\DomainException(sprintf(
+                    'PriorityQueue expects an internal queue of type SplPriorityQueue; received "%s"',
+                    get_class($this->queue)
+                ));
+            }
+        }
+        return $this->queue;
+    }
+
+    /**
+     * Add support for deep cloning
+     *
+     * @return void
+     */
+    public function __clone()
+    {
+        if (null !== $this->queue) {
+            $this->queue = clone $this->queue;
+        }
+    }
+}

vendor/zendframework/zend-stdlib/src/Request.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+class Request extends Message implements RequestInterface
+{
+    // generic request implementation
+}

vendor/zendframework/zend-stdlib/src/RequestInterface.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+interface RequestInterface extends MessageInterface
+{
+}

vendor/zendframework/zend-stdlib/src/Response.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+class Response extends Message implements ResponseInterface
+{
+    // generic response implementation
+}

vendor/zendframework/zend-stdlib/src/ResponseInterface.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+interface ResponseInterface extends MessageInterface
+{
+}

vendor/zendframework/zend-stdlib/src/SplPriorityQueue.php

@@ -0,0 +1,91 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use Serializable;
+
+/**
+ * Serializable version of SplPriorityQueue
+ *
+ * Also, provides predictable heap order for datums added with the same priority
+ * (i.e., they will be emitted in the same order they are enqueued).
+ */
+class SplPriorityQueue extends \SplPriorityQueue implements Serializable
+{
+    /**
+     * @var int Seed used to ensure queue order for items of the same priority
+     */
+    protected $serial = PHP_INT_MAX;
+
+    /**
+     * Insert a value with a given priority
+     *
+     * Utilizes {@var $serial} to ensure that values of equal priority are
+     * emitted in the same order in which they are inserted.
+     *
+     * @param  mixed $datum
+     * @param  mixed $priority
+     * @return void
+     */
+    public function insert($datum, $priority)
+    {
+        if (!is_array($priority)) {
+            $priority = [$priority, $this->serial--];
+        }
+        parent::insert($datum, $priority);
+    }
+
+    /**
+     * Serialize to an array
+     *
+     * Array will be priority => data pairs
+     *
+     * @return array
+     */
+    public function toArray()
+    {
+        $array = [];
+        foreach (clone $this as $item) {
+            $array[] = $item;
+        }
+        return $array;
+    }
+
+    /**
+     * Serialize
+     *
+     * @return string
+     */
+    public function serialize()
+    {
+        $clone = clone $this;
+        $clone->setExtractFlags(self::EXTR_BOTH);
+
+        $data = [];
+        foreach ($clone as $item) {
+            $data[] = $item;
+        }
+
+        return serialize($data);
+    }
+
+    /**
+     * Deserialize
+     *
+     * @param  string $data
+     * @return void
+     */
+    public function unserialize($data)
+    {
+        foreach (unserialize($data) as $item) {
+            $this->insert($item['data'], $item['priority']);
+        }
+    }
+}

vendor/zendframework/zend-stdlib/src/SplQueue.php

@@ -0,0 +1,55 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use Serializable;
+
+/**
+ * Serializable version of SplQueue
+ */
+class SplQueue extends \SplQueue implements Serializable
+{
+    /**
+     * Return an array representing the queue
+     *
+     * @return array
+     */
+    public function toArray()
+    {
+        $array = [];
+        foreach ($this as $item) {
+            $array[] = $item;
+        }
+        return $array;
+    }
+
+    /**
+     * Serialize
+     *
+     * @return string
+     */
+    public function serialize()
+    {
+        return serialize($this->toArray());
+    }
+
+    /**
+     * Unserialize
+     *
+     * @param  string $data
+     * @return void
+     */
+    public function unserialize($data)
+    {
+        foreach (unserialize($data) as $item) {
+            $this->push($item);
+        }
+    }
+}

vendor/zendframework/zend-stdlib/src/SplStack.php

@@ -0,0 +1,55 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use Serializable;
+
+/**
+ * Serializable version of SplStack
+ */
+class SplStack extends \SplStack implements Serializable
+{
+    /**
+     * Serialize to an array representing the stack
+     *
+     * @return array
+     */
+    public function toArray()
+    {
+        $array = [];
+        foreach ($this as $item) {
+            $array[] = $item;
+        }
+        return $array;
+    }
+
+    /**
+     * Serialize
+     *
+     * @return string
+     */
+    public function serialize()
+    {
+        return serialize($this->toArray());
+    }
+
+    /**
+     * Unserialize
+     *
+     * @param  string $data
+     * @return void
+     */
+    public function unserialize($data)
+    {
+        foreach (unserialize($data) as $item) {
+            $this->unshift($item);
+        }
+    }
+}

vendor/zendframework/zend-stdlib/src/StringUtils.php

@@ -0,0 +1,187 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib;
+
+use Zend\Stdlib\StringWrapper\StringWrapperInterface;
+
+/**
+ * Utility class for handling strings of different character encodings
+ * using available PHP extensions.
+ *
+ * Declared abstract, as we have no need for instantiation.
+ */
+abstract class StringUtils
+{
+    /**
+     * Ordered list of registered string wrapper instances
+     *
+     * @var StringWrapperInterface[]
+     */
+    protected static $wrapperRegistry = null;
+
+    /**
+     * A list of known single-byte character encodings (upper-case)
+     *
+     * @var string[]
+     */
+    protected static $singleByteEncodings = [
+        'ASCII', '7BIT', '8BIT',
+        'ISO-8859-1', 'ISO-8859-2', 'ISO-8859-3', 'ISO-8859-4', 'ISO-8859-5',
+        'ISO-8859-6', 'ISO-8859-7', 'ISO-8859-8', 'ISO-8859-9', 'ISO-8859-10',
+        'ISO-8859-11', 'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15', 'ISO-8859-16',
+        'CP-1251', 'CP-1252',
+        // TODO
+    ];
+
+    /**
+     * Is PCRE compiled with Unicode support?
+     *
+     * @var bool
+     **/
+    protected static $hasPcreUnicodeSupport = null;
+
+    /**
+     * Get registered wrapper classes
+     *
+     * @return string[]
+     */
+    public static function getRegisteredWrappers()
+    {
+        if (static::$wrapperRegistry === null) {
+            static::$wrapperRegistry = [];
+
+            if (extension_loaded('intl')) {
+                static::$wrapperRegistry[] = 'Zend\Stdlib\StringWrapper\Intl';
+            }
+
+            if (extension_loaded('mbstring')) {
+                static::$wrapperRegistry[] = 'Zend\Stdlib\StringWrapper\MbString';
+            }
+
+            if (extension_loaded('iconv')) {
+                static::$wrapperRegistry[] = 'Zend\Stdlib\StringWrapper\Iconv';
+            }
+
+            static::$wrapperRegistry[] = 'Zend\Stdlib\StringWrapper\Native';
+        }
+
+        return static::$wrapperRegistry;
+    }
+
+    /**
+     * Register a string wrapper class
+     *
+     * @param string $wrapper
+     * @return void
+     */
+    public static function registerWrapper($wrapper)
+    {
+        $wrapper = (string) $wrapper;
+        if (!in_array($wrapper, static::$wrapperRegistry, true)) {
+            static::$wrapperRegistry[] = $wrapper;
+        }
+    }
+
+    /**
+     * Unregister a string wrapper class
+     *
+     * @param string $wrapper
+     * @return void
+     */
+    public static function unregisterWrapper($wrapper)
+    {
+        $index = array_search((string) $wrapper, static::$wrapperRegistry, true);
+        if ($index !== false) {
+            unset(static::$wrapperRegistry[$index]);
+        }
+    }
+
+    /**
+     * Reset all registered wrappers so the default wrappers will be used
+     *
+     * @return void
+     */
+    public static function resetRegisteredWrappers()
+    {
+        static::$wrapperRegistry = null;
+    }
+
+    /**
+     * Get the first string wrapper supporting the given character encoding
+     * and supports to convert into the given convert encoding.
+     *
+     * @param string      $encoding        Character encoding to support
+     * @param string|null $convertEncoding OPTIONAL character encoding to convert in
+     * @return StringWrapperInterface
+     * @throws Exception\RuntimeException If no wrapper supports given character encodings
+     */
+    public static function getWrapper($encoding = 'UTF-8', $convertEncoding = null)
+    {
+        foreach (static::getRegisteredWrappers() as $wrapperClass) {
+            if ($wrapperClass::isSupported($encoding, $convertEncoding)) {
+                $wrapper = new $wrapperClass($encoding, $convertEncoding);
+                $wrapper->setEncoding($encoding, $convertEncoding);
+                return $wrapper;
+            }
+        }
+
+        throw new Exception\RuntimeException(
+            'No wrapper found supporting "' . $encoding . '"'
+            . (($convertEncoding !== null) ? ' and "' . $convertEncoding . '"' : '')
+        );
+    }
+
+    /**
+     * Get a list of all known single-byte character encodings
+     *
+     * @return string[]
+     */
+    public static function getSingleByteEncodings()
+    {
+        return static::$singleByteEncodings;
+    }
+
+    /**
+     * Check if a given encoding is a known single-byte character encoding
+     *
+     * @param string $encoding
+     * @return bool
+     */
+    public static function isSingleByteEncoding($encoding)
+    {
+        return in_array(strtoupper($encoding), static::$singleByteEncodings);
+    }
+
+    /**
+     * Check if a given string is valid UTF-8 encoded
+     *
+     * @param string $str
+     * @return bool
+     */
+    public static function isValidUtf8($str)
+    {
+        return is_string($str) && ($str === '' || preg_match('/^./su', $str) == 1);
+    }
+
+    /**
+     * Is PCRE compiled with Unicode support?
+     *
+     * @return bool
+     */
+    public static function hasPcreUnicodeSupport()
+    {
+        if (static::$hasPcreUnicodeSupport === null) {
+            ErrorHandler::start();
+            static::$hasPcreUnicodeSupport = defined('PREG_BAD_UTF8_OFFSET_ERROR') && preg_match('/\pL/u', 'a') == 1;
+            ErrorHandler::stop();
+        }
+        return static::$hasPcreUnicodeSupport;
+    }
+}

vendor/zendframework/zend-stdlib/src/StringWrapper/AbstractStringWrapper.php

@@ -0,0 +1,269 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\StringWrapper;
+
+use Zend\Stdlib\Exception;
+use Zend\Stdlib\StringUtils;
+
+abstract class AbstractStringWrapper implements StringWrapperInterface
+{
+    /**
+     * The character encoding working on
+     * @var string|null
+     */
+    protected $encoding = 'UTF-8';
+
+    /**
+     * An optionally character encoding to convert to
+     * @var string|null
+     */
+    protected $convertEncoding;
+
+    /**
+     * Check if the given character encoding is supported by this wrapper
+     * and the character encoding to convert to is also supported.
+     *
+     * @param  string      $encoding
+     * @param  string|null $convertEncoding
+     * @return bool
+     */
+    public static function isSupported($encoding, $convertEncoding = null)
+    {
+        $supportedEncodings = static::getSupportedEncodings();
+
+        if (!in_array(strtoupper($encoding), $supportedEncodings)) {
+            return false;
+        }
+
+        if ($convertEncoding !== null && !in_array(strtoupper($convertEncoding), $supportedEncodings)) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Set character encoding working with and convert to
+     *
+     * @param string      $encoding         The character encoding to work with
+     * @param string|null $convertEncoding  The character encoding to convert to
+     * @return StringWrapperInterface
+     */
+    public function setEncoding($encoding, $convertEncoding = null)
+    {
+        $supportedEncodings = static::getSupportedEncodings();
+
+        $encodingUpper = strtoupper($encoding);
+        if (!in_array($encodingUpper, $supportedEncodings)) {
+            throw new Exception\InvalidArgumentException(
+                'Wrapper doesn\'t support character encoding "' . $encoding . '"'
+            );
+        }
+
+        if ($convertEncoding !== null) {
+            $convertEncodingUpper = strtoupper($convertEncoding);
+            if (!in_array($convertEncodingUpper, $supportedEncodings)) {
+                throw new Exception\InvalidArgumentException(
+                    'Wrapper doesn\'t support character encoding "' . $convertEncoding . '"'
+                );
+            }
+
+            $this->convertEncoding = $convertEncodingUpper;
+        } else {
+            $this->convertEncoding = null;
+        }
+        $this->encoding = $encodingUpper;
+
+        return $this;
+    }
+
+    /**
+     * Get the defined character encoding to work with
+     *
+     * @return string
+     * @throws Exception\LogicException If no encoding was defined
+     */
+    public function getEncoding()
+    {
+        return $this->encoding;
+    }
+
+    /**
+     * Get the defined character encoding to convert to
+     *
+     * @return string|null
+    */
+    public function getConvertEncoding()
+    {
+        return $this->convertEncoding;
+    }
+
+    /**
+     * Convert a string from defined character encoding to the defined convert encoding
+     *
+     * @param string  $str
+     * @param bool $reverse
+     * @return string|false
+     */
+    public function convert($str, $reverse = false)
+    {
+        $encoding        = $this->getEncoding();
+        $convertEncoding = $this->getConvertEncoding();
+        if ($convertEncoding === null) {
+            throw new Exception\LogicException(
+                'No convert encoding defined'
+            );
+        }
+
+        if ($encoding === $convertEncoding) {
+            return $str;
+        }
+
+        $from = $reverse ? $convertEncoding : $encoding;
+        $to   = $reverse ? $encoding : $convertEncoding;
+        throw new Exception\RuntimeException(sprintf(
+            'Converting from "%s" to "%s" isn\'t supported by this string wrapper',
+            $from,
+            $to
+        ));
+    }
+
+    /**
+     * Wraps a string to a given number of characters
+     *
+     * @param  string  $string
+     * @param  int $width
+     * @param  string  $break
+     * @param  bool $cut
+     * @return string|false
+     */
+    public function wordWrap($string, $width = 75, $break = "\n", $cut = false)
+    {
+        $string = (string) $string;
+        if ($string === '') {
+            return '';
+        }
+
+        $break = (string) $break;
+        if ($break === '') {
+            throw new Exception\InvalidArgumentException('Break string cannot be empty');
+        }
+
+        $width = (int) $width;
+        if ($width === 0 && $cut) {
+            throw new Exception\InvalidArgumentException('Cannot force cut when width is zero');
+        }
+
+        if (StringUtils::isSingleByteEncoding($this->getEncoding())) {
+            return wordwrap($string, $width, $break, $cut);
+        }
+
+        $stringWidth = $this->strlen($string);
+        $breakWidth  = $this->strlen($break);
+
+        $result    = '';
+        $lastStart = $lastSpace = 0;
+
+        for ($current = 0; $current < $stringWidth; $current++) {
+            $char = $this->substr($string, $current, 1);
+
+            $possibleBreak = $char;
+            if ($breakWidth !== 1) {
+                $possibleBreak = $this->substr($string, $current, $breakWidth);
+            }
+
+            if ($possibleBreak === $break) {
+                $result    .= $this->substr($string, $lastStart, $current - $lastStart + $breakWidth);
+                $current   += $breakWidth - 1;
+                $lastStart  = $lastSpace = $current + 1;
+                continue;
+            }
+
+            if ($char === ' ') {
+                if ($current - $lastStart >= $width) {
+                    $result    .= $this->substr($string, $lastStart, $current - $lastStart) . $break;
+                    $lastStart  = $current + 1;
+                }
+
+                $lastSpace = $current;
+                continue;
+            }
+
+            if ($current - $lastStart >= $width && $cut && $lastStart >= $lastSpace) {
+                $result    .= $this->substr($string, $lastStart, $current - $lastStart) . $break;
+                $lastStart  = $lastSpace = $current;
+                continue;
+            }
+
+            if ($current - $lastStart >= $width && $lastStart < $lastSpace) {
+                $result    .= $this->substr($string, $lastStart, $lastSpace - $lastStart) . $break;
+                $lastStart  = $lastSpace = $lastSpace + 1;
+                continue;
+            }
+        }
+
+        if ($lastStart !== $current) {
+            $result .= $this->substr($string, $lastStart, $current - $lastStart);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Pad a string to a certain length with another string
+     *
+     * @param  string  $input
+     * @param  int $padLength
+     * @param  string  $padString
+     * @param  int $padType
+     * @return string
+     */
+    public function strPad($input, $padLength, $padString = ' ', $padType = STR_PAD_RIGHT)
+    {
+        if (StringUtils::isSingleByteEncoding($this->getEncoding())) {
+            return str_pad($input, $padLength, $padString, $padType);
+        }
+
+        $lengthOfPadding = $padLength - $this->strlen($input);
+        if ($lengthOfPadding <= 0) {
+            return $input;
+        }
+
+        $padStringLength = $this->strlen($padString);
+        if ($padStringLength === 0) {
+            return $input;
+        }
+
+        $repeatCount = floor($lengthOfPadding / $padStringLength);
+
+        if ($padType === STR_PAD_BOTH) {
+            $repeatCountLeft = $repeatCountRight = ($repeatCount - $repeatCount % 2) / 2;
+
+            $lastStringLength       = $lengthOfPadding - 2 * $repeatCountLeft * $padStringLength;
+            $lastStringLeftLength   = $lastStringRightLength = floor($lastStringLength / 2);
+            $lastStringRightLength += $lastStringLength % 2;
+
+            $lastStringLeft  = $this->substr($padString, 0, $lastStringLeftLength);
+            $lastStringRight = $this->substr($padString, 0, $lastStringRightLength);
+
+            return str_repeat($padString, $repeatCountLeft) . $lastStringLeft
+                . $input
+                . str_repeat($padString, $repeatCountRight) . $lastStringRight;
+        }
+
+        $lastString = $this->substr($padString, 0, $lengthOfPadding % $padStringLength);
+
+        if ($padType === STR_PAD_LEFT) {
+            return str_repeat($padString, $repeatCount) . $lastString . $input;
+        }
+
+        return $input . str_repeat($padString, $repeatCount) . $lastString;
+    }
+}

vendor/zendframework/zend-stdlib/src/StringWrapper/Iconv.php

@@ -0,0 +1,289 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\StringWrapper;
+
+use Zend\Stdlib\Exception;
+
+class Iconv extends AbstractStringWrapper
+{
+    /**
+     * List of supported character sets (upper case)
+     *
+     * @var string[]
+     * @link http://www.gnu.org/software/libiconv/
+     */
+    protected static $encodings = [
+        // European languages
+        'ASCII',
+        'ISO-8859-1',
+        'ISO-8859-2',
+        'ISO-8859-3',
+        'ISO-8859-4',
+        'ISO-8859-5',
+        'ISO-8859-7',
+        'ISO-8859-9',
+        'ISO-8859-10',
+        'ISO-8859-13',
+        'ISO-8859-14',
+        'ISO-8859-15',
+        'ISO-8859-16',
+        'KOI8-R',
+        'KOI8-U',
+        'KOI8-RU',
+        'CP1250',
+        'CP1251',
+        'CP1252',
+        'CP1253',
+        'CP1254',
+        'CP1257',
+        'CP850',
+        'CP866',
+        'CP1131',
+        'MACROMAN',
+        'MACCENTRALEUROPE',
+        'MACICELAND',
+        'MACCROATIAN',
+        'MACROMANIA',
+        'MACCYRILLIC',
+        'MACUKRAINE',
+        'MACGREEK',
+        'MACTURKISH',
+        'MACINTOSH',
+
+        // Semitic languages
+        'ISO-8859-6',
+        'ISO-8859-8',
+        'CP1255',
+        'CP1256',
+        'CP862',
+        'MACHEBREW',
+        'MACARABIC',
+
+        // Japanese
+        'EUC-JP',
+        'SHIFT_JIS',
+        'CP932',
+        'ISO-2022-JP',
+        'ISO-2022-JP-2',
+        'ISO-2022-JP-1',
+
+        // Chinese
+        'EUC-CN',
+        'HZ',
+        'GBK',
+        'CP936',
+        'GB18030',
+        'EUC-TW',
+        'BIG5',
+        'CP950',
+        'BIG5-HKSCS',
+        'BIG5-HKSCS:2004',
+        'BIG5-HKSCS:2001',
+        'BIG5-HKSCS:1999',
+        'ISO-2022-CN',
+        'ISO-2022-CN-EXT',
+
+        // Korean
+        'EUC-KR',
+        'CP949',
+        'ISO-2022-KR',
+        'JOHAB',
+
+        // Armenian
+        'ARMSCII-8',
+
+        // Georgian
+        'GEORGIAN-ACADEMY',
+        'GEORGIAN-PS',
+
+        // Tajik
+        'KOI8-T',
+
+        // Kazakh
+        'PT154',
+        'RK1048',
+
+        // Thai
+        'ISO-8859-11',
+        'TIS-620',
+        'CP874',
+        'MACTHAI',
+
+        // Laotian
+        'MULELAO-1',
+        'CP1133',
+
+        // Vietnamese
+        'VISCII',
+        'TCVN',
+        'CP1258',
+
+        // Platform specifics
+        'HP-ROMAN8',
+        'NEXTSTEP',
+
+        // Full Unicode
+        'UTF-8',
+        'UCS-2',
+        'UCS-2BE',
+        'UCS-2LE',
+        'UCS-4',
+        'UCS-4BE',
+        'UCS-4LE',
+        'UTF-16',
+        'UTF-16BE',
+        'UTF-16LE',
+        'UTF-32',
+        'UTF-32BE',
+        'UTF-32LE',
+        'UTF-7',
+        'C99',
+        'JAVA',
+
+        /* Commented out because that's internal encodings not existing in real world
+        // Full Unicode, in terms of uint16_t or uint32_t (with machine dependent endianness and alignment)
+        'UCS-2-INTERNAL',
+        'UCS-4-INTERNAL',
+
+        // Locale dependent, in terms of `char' or `wchar_t' (with machine dependent endianness and alignment,
+        // and with OS and locale dependent semantics)
+        'char',
+        'wchar_t',
+        '', // The empty encoding name is equivalent to "char": it denotes the locale dependent character encoding.
+        */
+
+        // When configured with the option --enable-extra-encodings,
+        // it also provides support for a few extra encodings:
+
+        // European languages
+        'CP437',
+        'CP737',
+        'CP775',
+        'CP852',
+        'CP853',
+        'CP855',
+        'CP857',
+        'CP858',
+        'CP860',
+        'CP861',
+        'CP863',
+        'CP865',
+        'CP869',
+        'CP1125',
+
+        // Semitic languages
+        'CP864',
+
+        // Japanese
+        'EUC-JISX0213',
+        'Shift_JISX0213',
+        'ISO-2022-JP-3',
+
+        // Chinese
+        'BIG5-2003', // (experimental)
+
+        // Turkmen
+        'TDS565',
+
+        // Platform specifics
+        'ATARIST',
+        'RISCOS-LATIN1',
+    ];
+
+    /**
+     * Get a list of supported character encodings
+     *
+     * @return string[]
+     */
+    public static function getSupportedEncodings()
+    {
+        return static::$encodings;
+    }
+
+    /**
+     * Constructor
+     *
+     * @throws Exception\ExtensionNotLoadedException
+     */
+    public function __construct()
+    {
+        if (!extension_loaded('iconv')) {
+            throw new Exception\ExtensionNotLoadedException(
+                'PHP extension "iconv" is required for this wrapper'
+            );
+        }
+    }
+
+    /**
+     * Returns the length of the given string
+     *
+     * @param string $str
+     * @return int|false
+     */
+    public function strlen($str)
+    {
+        return iconv_strlen($str, $this->getEncoding());
+    }
+
+    /**
+     * Returns the portion of string specified by the start and length parameters
+     *
+     * @param string   $str
+     * @param int      $offset
+     * @param int|null $length
+     * @return string|false
+     */
+    public function substr($str, $offset = 0, $length = null)
+    {
+        return iconv_substr($str, $offset, $length, $this->getEncoding());
+    }
+
+    /**
+     * Find the position of the first occurrence of a substring in a string
+     *
+     * @param string $haystack
+     * @param string $needle
+     * @param int    $offset
+     * @return int|false
+     */
+    public function strpos($haystack, $needle, $offset = 0)
+    {
+        return iconv_strpos($haystack, $needle, $offset, $this->getEncoding());
+    }
+
+    /**
+     * Convert a string from defined encoding to the defined convert encoding
+     *
+     * @param string  $str
+     * @param bool $reverse
+     * @return string|false
+     */
+    public function convert($str, $reverse = false)
+    {
+        $encoding        = $this->getEncoding();
+        $convertEncoding = $this->getConvertEncoding();
+        if ($convertEncoding === null) {
+            throw new Exception\LogicException(
+                'No convert encoding defined'
+            );
+        }
+
+        if ($encoding === $convertEncoding) {
+            return $str;
+        }
+
+        $fromEncoding = $reverse ? $convertEncoding : $encoding;
+        $toEncoding   = $reverse ? $encoding : $convertEncoding;
+
+        // automatically add "//IGNORE" to not stop converting on invalid characters
+        // invalid characters triggers a notice anyway
+        return iconv($fromEncoding, $toEncoding . '//IGNORE', $str);
+    }
+}

vendor/zendframework/zend-stdlib/src/StringWrapper/Intl.php

@@ -0,0 +1,88 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\StringWrapper;
+
+use Zend\Stdlib\Exception;
+
+class Intl extends AbstractStringWrapper
+{
+    /**
+     * List of supported character sets (upper case)
+     *
+     * @var string[]
+     */
+    protected static $encodings = ['UTF-8'];
+
+    /**
+     * Get a list of supported character encodings
+     *
+     * @return string[]
+     */
+    public static function getSupportedEncodings()
+    {
+        return static::$encodings;
+    }
+
+    /**
+     * Constructor
+     *
+     * @throws Exception\ExtensionNotLoadedException
+     */
+    public function __construct()
+    {
+        if (!extension_loaded('intl')) {
+            throw new Exception\ExtensionNotLoadedException(
+                'PHP extension "intl" is required for this wrapper'
+            );
+        }
+    }
+
+    /**
+     * Returns the length of the given string
+     *
+     * @param string $str
+     * @return int|false
+     */
+    public function strlen($str)
+    {
+        return grapheme_strlen($str);
+    }
+
+    /**
+     * Returns the portion of string specified by the start and length parameters
+     *
+     * @param string   $str
+     * @param int      $offset
+     * @param int|null $length
+     * @return string|false
+     */
+    public function substr($str, $offset = 0, $length = null)
+    {
+        // Due fix of PHP #62759 The third argument returns an empty string if is 0 or null.
+        if ($length !== null) {
+            return grapheme_substr($str, $offset, $length);
+        }
+
+        return grapheme_substr($str, $offset);
+    }
+
+    /**
+     * Find the position of the first occurrence of a substring in a string
+     *
+     * @param string $haystack
+     * @param string $needle
+     * @param int    $offset
+     * @return int|false
+     */
+    public function strpos($haystack, $needle, $offset = 0)
+    {
+        return grapheme_strpos($haystack, $needle, $offset);
+    }
+}

vendor/zendframework/zend-stdlib/src/StringWrapper/MbString.php

@@ -0,0 +1,121 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\StringWrapper;
+
+use Zend\Stdlib\Exception;
+
+class MbString extends AbstractStringWrapper
+{
+    /**
+     * List of supported character sets (upper case)
+     *
+     * @var null|string[]
+     * @link http://php.net/manual/mbstring.supported-encodings.php
+     */
+    protected static $encodings = null;
+
+    /**
+     * Get a list of supported character encodings
+     *
+     * @return string[]
+     */
+    public static function getSupportedEncodings()
+    {
+        if (static::$encodings === null) {
+            static::$encodings = array_map('strtoupper', mb_list_encodings());
+
+            // FIXME: Converting € (UTF-8) to ISO-8859-16 gives a wrong result
+            $indexIso885916 = array_search('ISO-8859-16', static::$encodings, true);
+            if ($indexIso885916 !== false) {
+                unset(static::$encodings[$indexIso885916]);
+            }
+        }
+
+        return static::$encodings;
+    }
+
+    /**
+     * Constructor
+     *
+     * @throws Exception\ExtensionNotLoadedException
+     */
+    public function __construct()
+    {
+        if (!extension_loaded('mbstring')) {
+            throw new Exception\ExtensionNotLoadedException(
+                'PHP extension "mbstring" is required for this wrapper'
+            );
+        }
+    }
+
+    /**
+     * Returns the length of the given string
+     *
+     * @param string $str
+     * @return int|false
+     */
+    public function strlen($str)
+    {
+        return mb_strlen($str, $this->getEncoding());
+    }
+
+    /**
+     * Returns the portion of string specified by the start and length parameters
+     *
+     * @param string   $str
+     * @param int      $offset
+     * @param int|null $length
+     * @return string|false
+     */
+    public function substr($str, $offset = 0, $length = null)
+    {
+        return mb_substr($str, $offset, $length, $this->getEncoding());
+    }
+
+    /**
+     * Find the position of the first occurrence of a substring in a string
+     *
+     * @param string $haystack
+     * @param string $needle
+     * @param int    $offset
+     * @return int|false
+     */
+    public function strpos($haystack, $needle, $offset = 0)
+    {
+        return mb_strpos($haystack, $needle, $offset, $this->getEncoding());
+    }
+
+    /**
+     * Convert a string from defined encoding to the defined convert encoding
+     *
+     * @param string  $str
+     * @param bool $reverse
+     * @return string|false
+     */
+    public function convert($str, $reverse = false)
+    {
+        $encoding        = $this->getEncoding();
+        $convertEncoding = $this->getConvertEncoding();
+
+        if ($convertEncoding === null) {
+            throw new Exception\LogicException(
+                'No convert encoding defined'
+            );
+        }
+
+        if ($encoding === $convertEncoding) {
+            return $str;
+        }
+
+        $fromEncoding = $reverse ? $convertEncoding : $encoding;
+        $toEncoding   = $reverse ? $encoding : $convertEncoding;
+        return mb_convert_encoding($str, $toEncoding, $fromEncoding);
+    }
+}

vendor/zendframework/zend-stdlib/src/StringWrapper/Native.php

@@ -0,0 +1,134 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\StringWrapper;
+
+use Zend\Stdlib\Exception;
+use Zend\Stdlib\StringUtils;
+
+class Native extends AbstractStringWrapper
+{
+    /**
+     * The character encoding working on
+     * (overwritten to change defaut encoding)
+     *
+     * @var string
+     */
+    protected $encoding = 'ASCII';
+
+    /**
+     * Check if the given character encoding is supported by this wrapper
+     * and the character encoding to convert to is also supported.
+     *
+     * @param  string      $encoding
+     * @param  string|null $convertEncoding
+     * @return bool
+     */
+    public static function isSupported($encoding, $convertEncoding = null)
+    {
+        $encodingUpper      = strtoupper($encoding);
+        $supportedEncodings = static::getSupportedEncodings();
+
+        if (!in_array($encodingUpper, $supportedEncodings)) {
+            return false;
+        }
+
+        // This adapter doesn't support to convert between encodings
+        if ($convertEncoding !== null && $encodingUpper !== strtoupper($convertEncoding)) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Get a list of supported character encodings
+     *
+     * @return string[]
+     */
+    public static function getSupportedEncodings()
+    {
+        return StringUtils::getSingleByteEncodings();
+    }
+
+    /**
+     * Set character encoding working with and convert to
+     *
+     * @param string      $encoding         The character encoding to work with
+     * @param string|null $convertEncoding  The character encoding to convert to
+     * @return StringWrapperInterface
+     */
+    public function setEncoding($encoding, $convertEncoding = null)
+    {
+        $supportedEncodings = static::getSupportedEncodings();
+
+        $encodingUpper = strtoupper($encoding);
+        if (!in_array($encodingUpper, $supportedEncodings)) {
+            throw new Exception\InvalidArgumentException(
+                'Wrapper doesn\'t support character encoding "' . $encoding . '"'
+            );
+        }
+
+        if ($encodingUpper !== strtoupper($convertEncoding)) {
+            $this->convertEncoding = $encodingUpper;
+        }
+
+        if ($convertEncoding !== null) {
+            if ($encodingUpper !== strtoupper($convertEncoding)) {
+                throw new Exception\InvalidArgumentException(
+                    'Wrapper doesn\'t support to convert between character encodings'
+                );
+            }
+
+            $this->convertEncoding = $encodingUpper;
+        } else {
+            $this->convertEncoding = null;
+        }
+        $this->encoding = $encodingUpper;
+
+        return $this;
+    }
+
+    /**
+     * Returns the length of the given string
+     *
+     * @param string $str
+     * @return int|false
+     */
+    public function strlen($str)
+    {
+        return strlen($str);
+    }
+
+    /**
+     * Returns the portion of string specified by the start and length parameters
+     *
+     * @param string   $str
+     * @param int      $offset
+     * @param int|null $length
+     * @return string|false
+     */
+    public function substr($str, $offset = 0, $length = null)
+    {
+        return substr($str, $offset, $length);
+    }
+
+    /**
+     * Find the position of the first occurrence of a substring in a string
+     *
+     * @param string $haystack
+     * @param string $needle
+     * @param int    $offset
+     * @return int|false
+     */
+    public function strpos($haystack, $needle, $offset = 0)
+    {
+        return strpos($haystack, $needle, $offset);
+    }
+}

vendor/zendframework/zend-stdlib/src/StringWrapper/StringWrapperInterface.php

@@ -0,0 +1,111 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Stdlib\StringWrapper;
+
+interface StringWrapperInterface
+{
+    /**
+     * Check if the given character encoding is supported by this wrapper
+     * and the character encoding to convert to is also supported.
+     *
+     * @param string      $encoding
+     * @param string|null $convertEncoding
+     */
+    public static function isSupported($encoding, $convertEncoding = null);
+
+    /**
+     * Get a list of supported character encodings
+     *
+     * @return string[]
+     */
+    public static function getSupportedEncodings();
+
+    /**
+     * Set character encoding working with and convert to
+     *
+     * @param string      $encoding         The character encoding to work with
+     * @param string|null $convertEncoding  The character encoding to convert to
+     * @return StringWrapperInterface
+     */
+    public function setEncoding($encoding, $convertEncoding = null);
+
+    /**
+     * Get the defined character encoding to work with (upper case)
+     *
+     * @return string
+     */
+    public function getEncoding();
+
+    /**
+     * Get the defined character encoding to convert to (upper case)
+     *
+     * @return string|null
+     */
+    public function getConvertEncoding();
+
+    /**
+     * Returns the length of the given string
+     *
+     * @param string $str
+     * @return int|false
+     */
+    public function strlen($str);
+
+    /**
+     * Returns the portion of string specified by the start and length parameters
+     *
+     * @param string   $str
+     * @param int      $offset
+     * @param int|null $length
+     * @return string|false
+     */
+    public function substr($str, $offset = 0, $length = null);
+
+    /**
+     * Find the position of the first occurrence of a substring in a string
+     *
+     * @param string $haystack
+     * @param string $needle
+     * @param int    $offset
+     * @return int|false
+     */
+    public function strpos($haystack, $needle, $offset = 0);
+
+    /**
+     * Convert a string from defined encoding to the defined convert encoding
+     *
+     * @param string  $str
+     * @param bool $reverse
+     * @return string|false
+     */
+    public function convert($str, $reverse = false);
+
+    /**
+     * Wraps a string to a given number of characters
+     *
+     * @param  string  $str
+     * @param  int $width
+     * @param  string  $break
+     * @param  bool $cut
+     * @return string
+     */
+    public function wordWrap($str, $width = 75, $break = "\n", $cut = false);
+
+    /**
+     * Pad a string to a certain length with another string
+     *
+     * @param  string  $input
+     * @param  int $padLength
+     * @param  string  $padString
+     * @param  int $padType
+     * @return string
+     */
+    public function strPad($input, $padLength, $padString = ' ', $padType = STR_PAD_RIGHT);
+}