renamed throttle with motor
added set_motor_state accessor
removed overloading of ENABLE parameter
fixed circular tack_enabled logic which led to assisting a tack disabling a tack
separate assistance for low wind vs tacking
also fix airspeed library's parameter description
also log NaN when we do not have wind direction or speed estimates
also send timeout message to GCS when taking takes too long
Peter Hall
Randy Mackay
Patrick José Pereira