0.2.2 released

[Evan Rosson]

Highlights of this release: lots of bug and doc fixes; things work
better with SA 0.3.1; migrate's automated tests are organized somewhat
better. 'logsql=True' and driver(engine) have also been deprecated;
see the trac tickets referenced below for why.

Changelog entries:
0.2.2
- Deprecated driver(engine) in favor of engine.name (#80)
- Deprecated logsql (#75)
- Comments in .sql scripts don't make things fail silently now (#74)
- Errors while downgrading (and probably other places) are shown on
their own line
- Created mailing list and announcements list, updated documentation
accordingly
- Automated tests now require py.test (#66)
- Documentation fix to .sql script commits (#72)
- Fixed a pretty major bug involving logengine, dealing with
commits/tests (#64)
- Fixes to the online docs - default DB versioning table name (#68)
- Fixed the engine name in the scripts created by the command
'migrate script' (#69)
- Added Evan's email to the online docs

--
- Evan