Very nice! I worked through all the levels you have and everything worked great, it was a lot of fun.

Some notes: I "cheated" and used cherry-pick before it was introduced, not sure if that should or should not be allowed. Sometimes I was frustrated because my graph looked like the goal except for "ghosted" nodes, had to go back and figure out a different way to solve the level the right way. I wished I had an "undo" feature to take back moves rather than resetting everything. Lots more hints would be good, this stuff is hard.

Honestly I learned more git in the last 10 minutes than I've learned in a year of using git, or from several hours reading git tutorials.