CHANGELOG.md in logstash-output-datadog_metrics-3.0.4 vs CHANGELOG.md in logstash-output-datadog_metrics-3.0.5

@@ -1,4 +1,7 @@
+## 3.0.5
+  - Change `api_key` config type to `password` to prevent leaking in debug logs [#18](https://github.com/logstash-plugins/logstash-output-datadog_metrics/pull/18)
+
 ## 3.0.4
   - Docs: Set the default_codec doc attribute.
 
 ## 3.0.3
   - Update gemspec summary