Fixed inaccurate documentation in CanMessages.
Fixed errors with CANode shields have too much clearance around board edges.
Fixed some C warning found when using the --pedantic compilation option.
The RC node now only transmits actuator commands when the RC transmitter is in manual mode. This is so the transmitter can remain on, but inactive during testing. A simple switch can allow for an override, instead of waiting for the power-on and pairing sequence to finish, which can take several seconds.