tidied up DspGraph and related Patch functions
work on Connector (statistics and dspblock)
intermediate work on DspConnector
adjusted DspModule, especially add_(Connector*) and updateDspInputs() + DspConnector::transport()

- meanwhile i'm not 100% certain if a class hierarchy is the best way to go (e.g. DspModule, DspConnector). It makes sense of course but involves a lot of checks with dynamic_cast, and additional vectors<> to keep those tests out of the dsp loop...
worked in AudioDevice and callback to Model and Patch
started AudioDeviceFrame for selection of audio device
basic functionality of AudioDeviceFrame done
Placed AudioDevice into Model
started CSMOD::MODULE::DSP::AudioOut ;)
fixed bug in Patch::disconnect()
-still a bug in PatchView::updateFromPatch() / updateCables()
seemingly fixed updateFromPatch()
basic working of dsp paths

todo: Patch needs to uniformly update DspModules. Right now it's a bit all over the place.