laravel 6 support (#204)

Author: djoeycl

composer.json

@@ -12,7 +12,7 @@
     ],
     "require": {
         "php": ">=5.4.0",
-        "illuminate/support": "4.2.*|5.*"
+        "illuminate/support": "4.2.*|5.*|^6.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^7",