PHP 8 support

Author: Andrey Helldar

composer.json

@@ -15,7 +15,7 @@
         }
     ],
     "require": {
-        "php": "^7.3",
+        "php": "^7.3|^8.0",
         "illuminate/container": "^6.0|^7.0|^8.0",
         "illuminate/database": "^6.0|^7.0|^8.0",
         "illuminate/http": "^6.0|^7.0|^8.0",