Thanks for the release @billb
I just tried it today with a bixler2, and sadly on it, I need to recalibrate the arispeed sensor to read 0 before I take off (sometimes it's far away from 0 that it won't even arm).
On apmplanner2, in actions there is a way to calibrate the airspeed (which basically changes the airspeed ratio so that it reads 0).
Sadly, this seems to be missing from tower beta, so I had to go fetch my laptop on the field and reset the airspeed sensor, by which point I wasn't using tower anymore.
Is there a chance to add that missing feature?