How to move a commit between branches in the same stack?

[giovanniberti]

Title

[abhinav]

Hey @giovanniberti, right now this is manual using vanilla Git and then just 'stack restack'.
I have some ideas about how I want to support this, but none of it's been implemented yet:

• gs commit float, sink: Send a commit up or down the stack #560: 'gs commit float' and 'gs commit sink' to send a commit up or down
• WIP: new command: gs commit pick #536: 'gs commit pick' to cherry pick a commit
• [no issue]: a command that's a mix of git rebase -i and stack edit that lets you reorder commits and positions of branches in those commits