layout refactoring
add layout unit tests, refactor
change package for interface
add fader interface
more fader refactoring
update generator codebase
refactor effects
refactor mixer, add checkbox mixer test
add new generator test
more cleanup, remove dependencies
fix possible exception
workarround possible exception
add unit tests for all generators
add all mixer test
add all effect test
update maven plugin, update junit tests, update threshold effect
add missing header
update maven plugins
add javadoc
cleanup cell