Super excited to give this a whirl - i've been messing with graphite's `gt` command for stacking and it's been relatively decent but I didn't love needing to bring in another tool/service/account when I only care about the stacking behaviour. Was a fun experiment but nice I can simplify back onto `gh` and `git`

I hope that GitHub continues copying Graphite's homework in terms of functionality, because from what I can see they don't have equivalents to `gt split`, absorb, and so on. Those can be very useful in the right contexts.