remove PortAudio entirely
replace missing PortAudio with Qt audio
re-enable rendering and fix sampling algorithim
Merge remote-tracking branch 'upstream/master' into qt-for-portaudio
handle conflicts on merge with upstream master
repairs to Audio class after merge with upstream master
fix red/green display in audio debug rendering
use invokeMethod for Audio reset
wait for audio thread to quit on application exit
some spacing cleanup in Audio
fix rendered scope for new Qt Audio
resolve conflicts on merge with upstream master
Merge pull request #1322 from birarda/qt-for-portaudio

replace PortAudio with QAudioInput and QAudioOutput