removed `register` support, but kept test and cleaned up code
removed `register` support, but kept test and cleaned up code

evilemon/deku,dekujs/deku,ggd543/deku,IveWong/deku,joshrtay/deku,kvnneff/deku,ashaffer/deku,oeb25/deku,stonegithubs/deku,ulrikaugustsson/deku,joshrtay/deku,balaprasanna/deku,balaprasanna/deku,sunriseshow/deku