I wish that Violet provide a easy access to a SCM subsystem.
I think if in application it should be possible to:
Update to repos
Get newest from repos
and (most important) view prev. version from repos.
All features should be bound to some shortcuts.
Many times the most saying documentation between versions is to fast switch between diagrams, and thereby being able to spot the changes.
If this could be accepted as a feature, I can myself start to use some time in it - else you can see me fork this :)