Add support for laravel 8.x

Author: daverdalas

composer.json

@@ -17,8 +17,8 @@
     ],
     "require": {
         "php": ">=7.2",
-        "illuminate/config": "^6.0",
-        "illuminate/filesystem": "^6.0"
+        "illuminate/config": "^6.0|^7.0|^8.0",
+        "illuminate/filesystem": "^6.0|^7.0|8.0"
     },
     "autoload": {
         "psr-4": {