refacto/rm written in golang

feature/link to subject

refacto/spacing

refacto/test img size

refacto/confirm correct, rather than confirm not incorrect

refacto/rm repetition

refacto/indents

refacto/tests as function, cleaner

refacto/tests to function

refacto/link to Cube representation

refacto/solved png

refacto/group color

refacto/group prints color

refacto/dumpCubeGroup color

refacto/plural