libgit2/pygit2 — pull request #56 by carlosmn (2012-02-13 15:01:00+00:00)
Title: Add TreeBuilder

Add some simple TreeBuilder support to allow pythonistas to create arbitrary trees.

I'm not sure whether it might make sense to have the TreeBuilder grow out of a repo (or get a repo in the constructor), and use that if there is no argument to `TreeBuilder.write()`