git wrapup --edit

[JKrag]

It would be very useful if git wrapup had an --edit switch. This should work just like on git merge, i.e it should prepare the commit message it would anyway, but open the configured default editor to let me supplement the message.

For completenes and alignment with normal git, there should probably also be --no-edit switch to revert the behaviour if you have for instance aliased the --edit behaviour.