Rebase and set platform version to minimum supported to hold dependecies

Author: dzubchik

composer.json

@@ -33,6 +33,11 @@
     "scripts": {
         "fix": "./vendor/bin/php-cs-fixer fix --config=.php_cs.php"
     },
+    "config": {
+        "platform": {
+            "php": "5.6"
+        }
+    },
     "suggest": {
         "php-pm/httpkernel-adapter": "HttpKernel adapter for Symfony and Laravel frameworks",
         "php-pm/zend-adapter": "Zend application framework adapter",