Added audio DSP test program
Remove test variables
Fix print messages
Remove unwanted print
Clean up host application code
Use defines for MIN / MAX values.
Use correct data alignment for audio signals after fix to sc_i2s component.
Moved all debug printing to the control core.
Add a biquad state per channel.
Added initial DRC support to DSP demo app.
Use a basic 3-threshold DRC.
Change DRC filters to only affect high-volume signals.
Simplifying the host control application to ease maintenance. Adding DRC control from host.
Add the ability to enable/disable the Biquads and DRC from the host application.
Initial DSP GUI checkin
Initial implementation of level-controlled DRC.
Merge github.com:ajwlucas/sw_startkit_examples
Initial GUI with biquad control
Adding a QT-based GUI.
Improved README. Updated licence and other comments.