Backends (in Breezy upstream)
- Support for Mercurial
- Support for Svn

Upstream changes:
* pngcrush
* FSF

Debian
======

* Submit patches against non-Vcs packages to the BTS?
* Create cherry-pick merge proposals for bug fixes that are forwarded upstream
 + especially for stable debian releases

- use debian.deb822.GPGV_DEFAULT_KEYRING in upload-pending-changes.py ?

upload-pending-commits.py:
 * Improve speed of verifying signatures

- support --mode=merge-directive
- support --mode=debian-bts
