Update py-dulwich to 0.11.2.

This version supports python-3.x.

0.11.2 2015-09-18

IMPROVEMENTS

  * Add support for agent= capability. (Jelmer Vernooij, #298)

  * Add support for quiet capability. (Jelmer Vernooij)

CHANGES

  * The ParamikoSSHVendor class has been moved to
  * dulwich.contrib.paramiko_vendor, as it's currently untested.
    (Jelmer Vernooij, #364)

0.11.1 2015-09-13

Fix-up release to exclude broken blame.py file.

0.11.0 2015-09-13

IMPROVEMENTS

  * Extended Python3 support to most of the codebase.
    (Gary van der Merwe, Jelmer Vernooij)
  * The `Repo` object has a new `close` method that can be called to close any
    open resources. (Gary van der Merwe)
  * Support 'git.bat' in SubprocessGitClient on Windows.
    (Stefan Zimmermann)
  * Advertise 'ofs-delta' capability in receive-pack server side
    capabilities. (Jelmer Vernooij)
  * Switched `default_local_git_client_cls` to `LocalGitClient`.
    (Gary van der Merwe)
  * Add `porcelain.ls_remote` and `GitClient.get_refs`.
    (Michael Edgar)
  * Add `Repo.discover` method. (B. M. Corser)
  * Add `dulwich.objectspec.parse_refspec`. (Jelmer Vernooij)
  * Add `porcelain.pack_objects` and `porcelain.repack`.
    (Jelmer Vernooij)

BUG FIXES

  * Fix handling of 'done' in graph walker and implement the
    'no-done' capability. (Tommy Yu, #88)

  * Avoid recursion limit issues resolving deltas. (William Grant, #81)

  * Allow arguments in local client binary path overrides.
    (Jelmer Vernooij)

  * Fix handling of commands with arguments in paramiko SSH
    client. (Andreas Kl旦ckner, Jelmer Vernooij, #363)

  * Fix parsing of quoted strings in configs. (Jelmer Vernooij, #305)

(wiz)