Laravel 8 support

Author: sander3

composer.json

@@ -5,7 +5,7 @@
     "type": "library",
     "require": {
         "php": ">=7.0.0",
-        "laravel/framework": "~5.5|~6.0|~7.0"
+        "laravel/framework": "~5.5|~6.0|~7.0|~8.0"
     },
     "autoload": {
         "psr-4": {