* more documentation

* git rebase

* diff additions
  - annotate, blame

* submodule support

* repository admin
  - prune, fsck, pack-refs, count-objects, unpack-objects

* email/patch integration
  - request-pull(email_address), git-am, git-apply
  
* compatible with git 1.4

* More Error Examples

* More Git::Status methods

* Speed up through pure ruby

* Speed up through C bindings to libgit-thin

