Skyraider update

I've done some work on the A-1H Skyraider model, but much more work remains to be done. It now has propeller animation, landing gear de-selection (the first step in gear animation), and a working tail hook. No instruments yet, but using a HUD you can do carrier traps, even though it has an Air Force paint job :)

The engine is a 2700hp electric motor. Some day I'll figure out the new piston code and make a piston engine for it. The propeller gives it some torque (the wrong direction though?) that makes it a challenge to fly. You can't just trim it up and let go of the stick, well, unless you add useful bindings for aileron and rudder trim.