Changes/Improvements/Fixes
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* Added ascend/descend to Air vehicles
* Reduced size of Star Fighters by 50%
* Improved Pilot AI for Star Fighters
* Fixed bug with wheel vehicle center of gravity
* Base Ships now only target ground forces
* Added UI to display control settings (editing currently n/a)
* Removed selection frame from active vehicle
* Added toggle for showing friend vehicle selection frames
* Added toggle for Full Screen
* Updated OK button on playtest dialog
* Missile smoke time reduced