Laravel version update

Laravel version update

vendor/zendframework/zendservice-google-gcm/CHANGELOG.md

@@ -2,6 +2,56 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
+## 2.1.0 - 2018-05-08
+
+### Added
+
+- [#35](https://github.com/zendframework/ZendService_Google_Gcm/pull/35) adds support for PHP 7.1 and 7.2.
+
+- [#13](https://github.com/zendframework/ZendService_Google_Gcm/pull/13) adds constants mapping to common GCM error codes as `ZendService\Gcm\Response::ERROR_*`.
+
+### Changed
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- [#35](https://github.com/zendframework/ZendService_Google_Gcm/pull/35) removes support for PHP 5.5.
+
+- [#35](https://github.com/zendframework/ZendService_Google_Gcm/pull/35) removes support for HHVM.
+
+### Fixed
+
+- [#18](https://github.com/zendframework/ZendService_Google_Gcm/pull/18) adds a `Content-Length` header with the message length prior to sending
+  messages to GCM; this fixes 411 errors previously observed.
+
+## 2.0.0 - 2017-01-17
+
+### Added
+
+- [#27](https://github.com/zendframework/ZendService_Google_Gcm/pull/27) PSR-4 schema
+- [#27](https://github.com/zendframework/ZendService_Google_Gcm/pull/27) PHP >= 5.5 & 7
+- [#20](https://github.com/zendframework/ZendService_Google_Gcm/pull/25) Notification and priority parameters for FCM
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- [#27](https://github.com/zendframework/ZendService_Google_Gcm/pull/27) Fix travis CI integration
+- [#27](https://github.com/zendframework/ZendService_Google_Gcm/pull/27) Fix coding style (use ::class and short arrays)
+- [#27](https://github.com/zendframework/ZendService_Google_Gcm/pull/27) Fix docblocks for IDE integration
+- [#20](https://github.com/zendframework/ZendService_Google_Gcm/pull/25) Change endpoint to FCM
+
 ## 1.0.3 - 2015-10-13
 
 ### Added