achievements are now permanent, immediate, and tell you when you have achieved them
effects are simulated better at lower frame rates
no longer create/free particle models each time (a bit faster and should fragment memory less)
no longer change color, texture coord, or vertex array setting if hasn't changed
ai has less of a chance to wake up other ai now
now each race has a max number of civilian ships they can have out at one time
non-leader ai ships no longer activate other ai
ai destroyed by ai away from the player no longer drop loot
once a race's total number of military ships gets above a certain size, each fleet has to be a little smaller
now cull out more effects when too far from players
first level can now be purged of entities
