multirotor_att_control: use PID lib for yaw rate control
multirotor_att_control: style fixes, cleanup
multirotor_pos_control: failsafe against invalid yaw setpoint in AUTO
Merge branch 'master' into yaw_pid_fix
Don't limit the PWM output maximum for the IRIS to use the whole thrust range
Mavlink VFR message publication fix
Merge pull request #528 from PX4/mavlink_vfr_fix

Mavlink VFR message publication fix
Merge pull request #524 from PX4/hotfix_iris_max_pwm

IRIS PWM range
Merge branch 'yaw_pid_fix' of github.com:PX4/Firmware
Merge branch 'yaw_auto_failsafe' of github.com:PX4/Firmware
Merge branch 'master' of https://github.com/syantek/Firmware
Updated backside controller/ added backside config.
Added local position pub to att_pos_esitmator_ekf
Added local position publication to mavlink receiver for HIL.
Improved mode mapping for fixedwing_backside.
Fixed backside automode typo.
Merge pull request #530 from jgoppert/backside

Backside update/ python HIL fix
px4io driver: bug fixed
fix off by one in missionlib
Merge pull request #533 from thomasgubler/missionlib_fix

fix off by one in missionlib