Some improvements to server performance, particularly the star simulation thread.
Some minor improvements to the star simulation thread status thingy.
Bumped version number.
Possible fix for #22, and in fact a possible fix for a bunch of IllegalStateExceptions. Make UI_THREAD the default thread for event bus events, since that's what you want in the vast majority of cases (in fact, only one case in the whole code would be ANY_THREAD).