* Correctly exclude merge commits (there's a git log option for it)
* Stop mangling log lines with @ symbol. This should only be cut for
author of a change.
* Fix PEP8 issues
* Remove unused code
* Port to argparse (optparse is deprecated)
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>
Instead of hardcoding /usr/bin/python in shebangs, use /usr/bin/env.
This allows Pungi to work with dependencies installed in virtualenv.
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>