libgit2/objective-git — pull request #177 by joshaber (2013-06-05 15:00:01+00:00)
Title: Remove GTRepository's enumerator

It was bad for (at least) two reasons:

1. It made the memory management of `GTEnumerator` weird, since its `repository` reference had to weak.
2. It meant any method using `repository.enumerator` wasn't thread-safe.