options for offline or realtime timestretching
remove soundtouch
remove drowaudio module
use librubberband for timestretching
fixed bugs introduced in last commit
timestretch undo command
fixed bug introduced in last commit
redraw waveform after timestretching
bug fix
sampleraudiosource now inherits from audiosource rather than positionalaudiosource
realtime timestretching using librubberband
remember bpm settings when switching between offline and realtime mode
fix bug in last commit
save/load timestretch settings
enable realtime pitch correction