laravel 8 support (#38)

Author: saqueib

composer.json

@@ -22,8 +22,8 @@
     }
   ],
   "require": {
-    "php": ">=7.2.5",
-    "laravel/framework": "~5.4.0|~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0"
+    "php": ">=7.3.0",
+    "laravel/framework": "~5.4.0|~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0"
   },
   "require-dev": {
     "orchestra/testbench": "~3.8|^4.0",