Fix fetchEvent function to fetch by event topic

Change-Id: I8b08367a24ad61b4d805562412de2f70754d40cd
diff --git a/package.json b/package.json
index c575553..22e400c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "cord_workflow_controller",
-    "version": "0.5.1",
+    "version": "0.5.2",
     "description": "CORD Workflow Controller",
     "main": "src/server.js",
     "scripts": {