add sample recording and playback capabilities#5

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utz82 wants to merge 2 commits intomasterfrom sound_ext

+335-14

Commits on May 16, 2017

add sample recording and playback capabilities
utz82
committed

Commits on May 29, 2017

add safeguards against using motor functions while playing PWM samples, fix check for motorA activity in motorBOn(), adjust mic sampling thresholds and provide a sensitivity parameter for recording…
utz82
committed