Starting a distortion filter
Starting distortion implementation
Merge commit '446ff5c6471db70d2a0c69a44835afdae73225be' into feature/SimpleOverdrive

Conflicts:
	ATK/CMakeLists.txt
	tests/CMakeLists.txt
Finalizing the overdrive implementation
Merge branch 'feature/SimpleOverdrive' into develop
Fixed a stupid bug (used input port type to check output port type) because of a bad (missing?) type check.