Version 0.9 Some minor updates. Added licenses to files, enabled tests in setup.py, and changed a config directive. This bumps up the config version from 3 to 4. Also, we no longer have a hard dependency on pyalpm. We try to import it, but if we don't have it then we'll just not be able to run `-u` or use the UpdatedPkgs() class. Eventually we'll have some kind of python vercmp so that we can have a fallback.