PackRat ATM support.
PackRat DRE support
Clean up curves on PackRat wheel.
AES ATM support
AES DRE support.
Ducted Fan Isp, speed tweaks. Fixed mirroring flipping thrust vectors on opposite side of crafts, but breaks in-flight crafts to do it (needs KASability). Adjusted built-in AirCS to have the same Isp as main rotor. Tweaked base propeller RPM so it doesnt look wrong at low speeds (needs a blur disc, ideally)
Tweak wheel Torque curve moar.
Merge pull request #15 from Taverius/master

ATM, DRE support. Fan, wheel tweaks.