support php 8

Author: hivokas

composer.json

@@ -4,7 +4,7 @@
     "type": "library",
     "license": "MIT",
     "require": {
-        "php": "^7.3",
+        "php": "^7.3|^8.0",
         "laravel/framework": "^6.0|^7.0|^8.0",
         "guzzlehttp/guzzle": "^6.4",
         "jaybizzle/crawler-detect": "^1.2"