Vassals, transient wormholes, optional starlanes, optional expansion modes (colony ships!), new galaxy generator, sensors decoupled from logistics, more configuration options, more race graphics, more empires per game, and more!

This is a really big patch. There might be a few rough edges here and there, and if that's the case we'll try to push out point releases quickly.

Next up, spying. There won't be a 0.6.10. When the spy system is finished, we'll go to 0.7.