-added new model for union's hammerhead frigate which now has a 2 barrel gun that fires 2 projectiles
-rebalanced cost, health, and weapon for the hammerhead frigate
-fixed problem where projectiles were occasionally colliding incorrectly with cruisers and command ships
-units spawning from fleet portals now use warp effects (start small and get bigger)
-added a game speed slider to the options menu