Add WIP changelog.
+# v0.4.1 (WIP)
+
++ Add `vzctl.unmount` operation
++ Fix incorrect args in `vzctl.restart` operation
++ Fix `save=False` kwarg on `vzctl.set` not affecting command output (always saved)
++ Add script to generate empty test files
+
# v0.4
+ **Major change**: entirely new, streamlined CLI. Legacy support will remain for the next few releases. Usage is now:
