I was on the GK team a few years ago, so I'm obviously biased, but I believe that GK—specifically the design of graph[0]—helped me a lot to level up my git-fu.

I was on the GK team a few years ago, so I'm obviously biased, but I believe that GK—specifically the design of graph[0]—helped me a lot to level up my git-fu. [0] which was created before my time at Axosoft, so I'm not that biased :-P