I've been using this approach and it works amazingly well (for text-based formats like .tex and .md). I switched from mercurial to git because rebasing feels mu

I've been using this approach and it works amazingly well (for text-based formats like .tex and .md). I switched from mercurial to git because rebasing feels much more natural. I'm currently actively maintaining five different versions of a book in parallel as separate branches. The `master` branch sees the most fixes then I rebase the five branches. Anyway, it's great to see books stored in git. Mark my words, this will be a big thing for education!