Ensure NaN check is executed before any parts of the filter are run. Fix GPS velocity reset for case of initialized GPS
Airspeed calibration improvements
px4io: Do not forward excessively low battery voltages
Merge branch 'master' into airspeed_test_fix
Merge branch 'master' of github.com:PX4/Firmware into ekf_init
ekf: Logic cleanup and print code cleanup
Fix mavlink log header docs.
Fix accel cal docs.
Documentation only and unused defines only cleanup.
Command handling: Fix up local variable usage and status prints.
Buzzer and led: Fix -Wshadow warnings.
Mavlink text feedback: Remove now unneeded audio tag for critical messages, make overall printing more efficient. Remove buffers where no buffers are needed.
commander status leds: Fix -Wshadow warning.
commander RC handling: Fix -Wshadow warnings.
commander: More docs-only changes in headers.
commander: more text feedback improvements.
commander: Final MAVLink text feedback cleanup
Merge branch 'warnings_cleanup' into ekf_init
EKF init improvements
Fix calibration counter usage