Support laravel 7.0

Author: exileed

composer.json

@@ -20,7 +20,7 @@
   "require": {
     "php": ">=5.6",
     "guzzlehttp/guzzle": "~6.0",
-    "illuminate/support": "^5.0 || ^6.0",
+    "illuminate/support": "^5.0 || ^6.0 || ^7.0",
     "league/event": "^2.1"
   },
   "require-dev": {