CHANGELOG.md in markdiff-0.5.5 vs CHANGELOG.md in markdiff-0.6.0

@@ -1,4 +1,7 @@
+## 0.6.0
+- Add .del class to all del elements
+
 ## 0.5.5
 - Preserve classes on adding new class (e.g. .added)
 
 ## 0.5.4
 - Fix bug on patch operations order