Merge branch 'develop'

Release 0.6:

  * Unset upstream support.
  * Better wrapping of git log.
  * Apply patch suppport.
  * Return number of additions and deletions in diff.
  * Bug fixes and code cleanups.

Merge branch 'develop'

Release 0.5

Merge branch 'develop'

Release 0.4.2:
  * Performance improvements in status.
  * Output of log is piped to less.

Merge branch 'develop'

Release 0.4.1:

- Bug fixes (in diff and PyPI setup).

Release 0.4

Merge branch 'develop'

Re-org of the gitpylib project + setup.py