CHANGELOG.md in logstash-input-azure_event_hubs-1.0.3 vs CHANGELOG.md in logstash-input-azure_event_hubs-1.0.4

@@ -1,4 +1,7 @@
+## 1.0.4
+- Added guidelines for setting number of threads
+
 ## 1.0.3
 - Fixed doc issues
   - Changed `event-hub-connections` to `event_hub_connections`
   - Added emphasis for singular vs. plural for event_hub_connections