CHANGELOG.md in jdoc-0.3.4 vs CHANGELOG.md in jdoc-0.4.0

@@ -1,4 +1,7 @@
+## 0.4.0
+* Recognize `mediaType: 'null'` as "No response body"
+
 ## 0.3.4
 * Treat empty request parameters as no request body
 
 ## 0.3.3
 * Improve pattern format in properties section