Control all 4 wheels by PWM output. Functions to 'set speed', 'turn right', and 'turn left'.
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Merge branch 'master' of https://github.com/mangeman/Prevas-MAL_PD_SW-Malmo

Conflicts:
	HelloWorld/build/HelloWorld.bin
	HelloWorld/build/HelloWorld.elf
	HelloWorld/build/HelloWorld.map
	HelloWorld/build/HelloWorld.o