Merge branch 'JuanjbbSpiUsingUsart' of https://github.com/technik/arion into JuanjbbSpiUsingUsart

Conflicts:
	src/code/communication/usartmspim/usartmspim.cpp
Merge branch 'JuanjbbSpiUsingUsart' of https://github.com/technik/arion into JuanjbbSpiUsingUsart