Composer update

* updated Laravel to v5.6.38
* Added laravel tinker in dev dependencies

vendor/psy/psysh/src/Reflection/ReflectionConstant.php

@@ -0,0 +1,30 @@
+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2018 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Reflection;
+
+/**
+ * @deprecated ReflectionConstant is now ReflectionClassConstant. This class
+ *             name will be reclaimed in the next stable release, to be used for
+ *             ReflectionConstant_ :)
+ */
+class ReflectionConstant extends ReflectionClassConstant
+{
+    /**
+     * {inheritDoc}.
+     */
+    public function __construct($class, $name)
+    {
+        @\trigger_error('ReflectionConstant is now ReflectionClassConstant', E_USER_DEPRECATED);
+
+        parent::__construct($class, $name);
+    }
+}