user unfiltered samples if all EQ knobs are at the same position
Ramp Dry value on change
some code style fixes
A cpu and sound quality optimized version of the EQ
removed unused buffer
Merge remote-tracking branch 'upstream/master' into eq_rgbw

Conflicts:
	src/engine/enginefilterblock.cpp
	src/engine/enginefilterblock.h
Merge pull request #230 from daschuer/eq_rgbw

RGBW model EQ for auto "direct sound"