UAVCAN mixer renamed to /dev/uavcan/esc
Warning fixes
UAVCAN ESC controller - proof of concept state
Proper IO miltiplexing libuavcan + ORB
Catching up with STM32 driver optimizations in libuavcan
Micro optimization in UAVCAN polling loop
Removed misleading comment
Merge remote-tracking branch 'upstream/master' into geo

Conflicts:
	src/modules/commander/commander.cpp
	src/modules/ekf_att_pos_estimator/ekf_att_pos_estimator_main.cpp
geo: add functions to get global projection/transformation reference values
Merge remote-tracking branch 'upstream/master' into geo
geo: fix logic of globallocal converter initialization to depend on map projection initialization
Added vision position estimate topic
MAVLink app: Publish vision position estimate
INAV: Added vision position estimate input / topic
Fix to allow filter correction with vision position estimate
Merge pull request #1065 from ggregory8/vision_estimate

Fix to allow filter correction with vision position estimate
UAVCAN: append to EXTRADEFINES to those given by make cmd line
Merge pull request #1103 from hsteinhaus/uavcan-ardupilot

UAVCAN: append to EXTRADEFINES to those given by make cmd line
Merged master into geo
geo: Fix a series of warnings, some which actually pointed to real issues