Fleets

I home you are all having fun with the latest build! 

Fleets are coming along nicely. On my internal build fleet creation and generating a list of the fleets in existence is working very nicely. I am going to add the ability to rename and disband fleets this week. Then work can start on coordinating the fleet's movements with flight control. 

This first version of flight control will inform the ships where to place themselves in relation to a reference point or object. It will also inform the ships of the maximum acceleration they are allowed to apply so the fleet doesn't spread out due to differences in propulsion.