Can I (we?) help you to get MMA on a GitHub or similar git repo?
I'm quite aware of how to do it. But, I'm not motivated to do it for a number of reasons:
1. I really don't want to lose control of my code. Yeah, I'm a control freak,
2. And if (1) didn't matter (and it might not) I'm not sure how this would benefit me or the world. It would mean that I'd have to be more conscious of posting new code to github ... and I doubt I'd do that anymore than I now put up devel code on my own website.
I'm sure I don't understand things these days, and github is one