More tolerance on laravel version.

Author: pitchum

composer.json

@@ -9,7 +9,7 @@
     "type": "project",
     "require": {
         "php": ">=7.1.3",
-        "laravel/framework": "5.7.*",
+        "laravel/framework": ">=5.7.0 <6",
         "subfission/cas": ">=2.1.1 <3.0",
         "soundasleep/html2text": "~0.3"
     },