bump reflection-common; adjust minimum stability to beta

Author: ashnazg

composer.json

@@ -9,13 +9,13 @@
           "email": "[email protected]"
         }
     ],
-    "minimum-stability": "alpha",
+    "minimum-stability": "beta",
     "require": {
         "php": ">=7.1",
-        "phpdocumentor/reflection-common": "^2.0.0-alpha3"
+        "phpdocumentor/reflection-common": "~2.0.0-beta1"
     },
     "require-dev": {
-        "mockery/mockery": "^1.0.0-beta1",
+        "mockery/mockery": "~1",
         "phpunit/phpunit": "~6"
     },
     "autoload": {