Merge pull request #8 from netiul/allow_ramsey_uuid_4_0

Allow version ^4.0 of ramsey/uuid

Author: Alexander Miertsch

composer.json

@@ -20,7 +20,7 @@
         "event-engine/php-data": "^2.0-dev",
         "event-engine/php-engine-utils": "^0.1",
         "event-engine/php-schema": "^0.1",
-        "ramsey/uuid": "^3.6"
+        "ramsey/uuid": "^3.6|^4.0"
     },
     "require-dev": {
         "ext-json": "*",