There has been a lot of development activity in ArduPlane lately, and 2.60 is shaping up to be a major release. I'll cover the main points below and I'd also like to get some feedback from ArduPlane users on some of the changes. Wind Estimation The AHRS library will now do wind estimation while flying. It does this in two ways. If an airspeed sensor is fitted and the plane is not turning, then it…