Merge branch 'iireqs' of https://github.com/daschuer/mixxx into effect_graphic_eq
Add a processSample function for EngineFilterIIR<2, IIR_BP>
Implement a Biquad first order filter
Implement a graphic eq effect based on Biquad filters
Increase the number of supported effect parameters to 10
Add newly created files to depends.py
Register GraphicEQEffect with NativeBackend
Limit the number of parameter slots to 8
Display the center frequency for each band
Remove ramping from GraphicEQEffect
Allow the filter creator to specify which Q value should be used.
Create Biquad filters using a Q value of 2
Remove useless initialization
Declare fMid; just don't initialize it
Resolve merge conflicts
Merge branch 'master' of https://github.com/mixxxdj/mixxx into effect_graphic_eq
Remove empty lines from enginefilteriir.h
Pause filter if it is not processed
Minor coding style improvements
Pass Biquad filter's Q parameter to setFrequencyCorners()