Powermanagment unittest data send/receive
Rtcan send/receive and unittest, refs #1188
The makefiles for core/ and unittests/ have been enhanced for convenience.
Fixed several header guards from "*_HPP_" to "*_H_"
Added new periphery hardware (PCAL6524 GPIO extender and AT42QT1050 touch sensor) to the PowerManagement, including unit tests.
updated all file headers to 2019
removed the mysterious module.h file in the unittests directory (again!)
Further enhanced the motor driver unit test.
Reverted some modifications to the MotorDriver unit test for better stability.
Improved motor driver unit test for better identification of errors.
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