Fixex compatibility with Laravel 5.3

Author: imTigger

composer.json

@@ -15,10 +15,10 @@
     ],
     "require": {
         "php": ">=5.6.4",
-        "illuminate/contracts": ">=5.4",
-        "illuminate/database": ">=5.4",
-        "illuminate/queue": ">=5.4",
-        "illuminate/support": ">=5.4",
+        "illuminate/contracts": ">=5.3",
+        "illuminate/database": ">=5.3",
+        "illuminate/queue": ">=5.3",
+        "illuminate/support": ">=5.3",
         "nesbot/carbon": ">=1.21"
     },
     "require-dev": {