Require EE v0.1 versions

Author: codeliner

composer.json

@@ -18,8 +18,8 @@
   "require": {
     "php": "^7.2",
     "roave/security-advisories": "dev-master",
-    "event-engine/php-messaging": "dev-master",
-    "event-engine/php-engine-utils": "dev-master",
+    "event-engine/php-messaging": "^0.1",
+    "event-engine/php-engine-utils": "^0.1",
     "psr/log": "^1.1"
   },
   "require-dev": {