CHANGELOG.md in logstash-input-relp-3.0.3 vs CHANGELOG.md in logstash-input-relp-3.0.4

- old
+ new

@@ -1,4 +1,7 @@
+## 3.0.4
+  - Docs: Set the default_codec doc attribute.
+
 ## 3.0.3
   - Update gemspec summary
 
 ## 3.0.2
   - Fix some documentation issues