Upgrade to PHP 7.1+

Author: Mikk Mihkel Nurges

composer.json

@@ -28,13 +28,13 @@
     "license": "MIT",
     "type": "project",
     "require": {
-        "php": ">=5.5.9",
-        "illuminate/support": "5.1.*|5.2.*|5.3.*|5.4.*|5.5.*|5.6.*|5.7.*",
-        "webonyx/graphql-php": "~0.10.0",
-        "laravel/framework": "5.1.*|5.2.*|5.3.*|5.4.*|5.5.*|5.6.*|5.7.*"
+        "php": "^7.1",
+        "illuminate/support": "5.5.*|5.6.*|5.7.*",
+        "webonyx/graphql-php": "^0.13",
+        "laravel/framework": "5.5.*|5.6.*|5.7.*"
     },
     "require-dev": {
-        "orchestra/testbench": "3.1.*|3.2.*|3.3.*|3.4.*|3.5.*",
+        "orchestra/testbench": "3.5.*|3.6.*|3.7.*",
         "phpunit/phpunit": "^5.5|~6.0|~7.0"
     },
     "autoload": {