Sorry, not yet! I suppose we could allow editing the code pane using an external editor, but the spreadsheet would be tricky I think. Or do you have an idea of how that would work?
I don't really know. Maybe something as simple as using a git remote, I then edit in my editor of choice, commit, push to remote, then pull in the gui to get the latest. I'd rather do all that than have to use a different editor. Just something to think about. Thanks.