Support php 8.x

Author: willvincent

composer.json

@@ -9,7 +9,7 @@
         }
     ],
     "require": {
-        "php": ">=5.4.0 || ^7.2",
+        "php": ">=5.4.0 || ^7.2 || ^8.0",
         "illuminate/support": "~5.0 || ^6.0 || ^7.0 || ^8.0|^9.0",
         "simplepie/simplepie": "^1.5",
         "ext-curl": "*"