On: Git undo: We can do better

[jldugger]

`git-undo` has been part of git-extras[1] for a while. It doesn't use fancy git magic, so maybe this is better.

[1]: https://github.com/tj/git-extras

[skrebbel → jldugger]

It only removes the last commit. It's terribly named IMO, actually, cause I think that's seldomly the kind of thing you get into "omg I messed up how do I undo" panic for.

The undo described here is much more powerful and much closer to what people expect from the word "undo" from its functionality in other tools.