Update changelog

Author: TravisCardwell

CHANGELOG.md

@@ -26,6 +26,15 @@ following conventions:
 
 ## Unreleased
 
+### Breaking
+
+* Add default section support
+* Add top-level queues array support
+* Add import support
+* Add user-defined tag support
+* Remove split property
+* Change templates to use snake-case properties
+
 ## 0.2.0.0 (2020-08-11)
 
 ### Breaking