sumAbsPerChannel returns a bool for clipping
moved PeakIndicator CO to EngineVuMeter and removed clamping from input engines
moved preak indicator init to reset()
added copyClampBuffer to sounddevice, this way it is only applied when needed
remove EngineClipping
Make PeakIndicator duration independend fro buffer size and sample rate
reduce VU sample rate to 30 to match half of common dispaly frame rate
Merge pull request #229 from daschuer/clipping

Clipping