Merge pull request lazychaser#402 from cybercog/fix/laravel-6-support

Use caret in Laravel 6 version name

Author: lazychaser

composer.json

@@ -13,9 +13,9 @@
 
     "require": {
         "php": ">=7.1.3",
-        "illuminate/support": "~5.7.0|~5.8.0|~6.0",
-        "illuminate/database": "~5.7.0|~5.8.0|~6.0",
-        "illuminate/events": "~5.7.0|~5.8.0|~6.0"
+        "illuminate/support": "~5.7.0|~5.8.0|^6.0",
+        "illuminate/database": "~5.7.0|~5.8.0|^6.0",
+        "illuminate/events": "~5.7.0|~5.8.0|^6.0"
     },
 
     "autoload": {