UAVCAN update (lots of warning fixes)
UAVCAN: missing declaration warning fix
Merge pull request #1333 from PX4/uavcan_update

UAVCAN made warning-free
disable underspeed protection when landing also in tecs
Merge pull request #1335 from PX4/landingtecsunderspeed

disable underspeed protection when landing also in tecs
Rely on laser altitude once valid
Add more paranoid checks to sf0x altitude parsing
Merge pull request #1336 from PX4/laser_landing

Rely on laser altitude once valid
SF02/F driver: Improve parsing
Fix reschedule logic for SF02/F driver
Fixed SF02/F driver, tested ok
Merge branch 'sf0x_paranoid'
Better initial config for Phantom
Simply throttle limiting on approach - limit throttle still defaults to 1
Merge pull request #1338 from PX4/throttle_limit_simplified

Simplify throttle limiting on approach
Merge branch 'master' of github.com:PX4/Firmware into indoor
Use vision for heading reference whenever available, independent of GPS
INAV: Adjust vision default params