Updated change log.

Author: kmvanbrunt

CHANGELOG.md

@@ -46,6 +46,7 @@ shell, and the option for a persistent bottom bar that can display realtime stat
     - Renamed `Statement.output_to` to `Statement.redirect_to`.
     - Removed `Statement.pipe_to` since it can be handled by `Statement.redirector` and
       `Statement.redirect_to`.
+    - Changed `StatementParser.parse_command_only()` to return a `PartialStatement` object.
 - Enhancements
     - New `cmd2.Cmd` parameters
         - **auto_suggest**: (boolean) if `True`, provide fish shell style auto-suggestions. These