Better compressor/expander graphs
Merge branch 'develop' of https://github.com/mbrucher/AudioTK into develop
First trial at a time varying EQ. Didn't pay attention to transients yet.
Adding a smoothing factor of the IIR coeffs. Not the best, as it is the roots that should have been smoothed, but hopefully faster.
Merge branch 'feature/TimeVaryingSecondOrderEQ' into develop
Fixing Linux build
Updates
Using another type of filter for this test
Changed slope name to ratio
Documentation update
Merge branch 'develop' of https://github.com/mbrucher/AudioTK into develop
Merge branch 'release/ATK-0.4.2' into develop

Conflicts:
	README.md
Future plans update
Trying to limit the search for the new update to something less extreme. Could help for NaNs and reducing the number of iterations in the end.
Adding the possibility of a limiter (changed limits in the Attack/Release filter)
Fixed examples
Trial at a M/S compressor, as the plugin has issues :/
Small explanation on the feedback fixed delay
Not working yet (except if both delays are equal) and not enough tests.
Used the variable universal line implementation as reference. Although it may be more complex for the processor, it is simpler to code, as there are only 2 loops instead of a magnitude more if using less memory.

The tests still need to be updated.