PHP 8 Support

Author: irazasyed

composer.json

@@ -19,7 +19,7 @@
         }
     ],
     "require": {
-        "php": ">=7.1",
+        "php": "^7.1 || ^8.0",
         "ext-json": "*",
         "guzzlehttp/guzzle": "^6.2 || ^7.0",
         "illuminate/notifications": "^5.5 || ^6.0 || ^7.0 || ^8.0",