Copter: don't stop logging on disarm when LOG_WHEN_DISARMED is set
AHRS: add reset_gyro_drift method
Copter: reset ahrs gyro drift after gyro calibration
GPS: use primary for Notification
GPS: init primary_instance to zero
AP_AHRS : Add reset of EKF gyro bias states
AP_NavEKF : Add public method to reset gyro bias states
Copter: fail to arm if gyro cal fails
Copter: re-enable CPU failsafe if arming fails
Copter: return false when arming fails
AP_NavEKF : add INIT_GYRO_BIAS_UNCERTAINTY definition
Copter: update AC3.2-rc14 ReleaseNotes
Copter: minor update to AC3.2-rc14 ReleaseNotes
Copter: update AC3.2 ReleaseNotes
Copter: update version to AC3.2
VRBRAIN: modified target clean
DataFlash: Added four more channels for logging
AP_Compass: VRBRAIN. Deal with external mag connected on internal I2C on VRBRAIN 4.5
This enables user to set the external parameter to true even if only one compass is connected
VRBRAIN: defined AirSpeed inputs for ArduPlane on VR Micro Brain 5
VRBRAIN: added flag for to build versions with different kind of RC Inputs