test: raise coverage to 100%

chore: fix last es6 artifacts

chore: Merge branch 'develop'

* develop:
  fix: don't log `undefined`

test: fix test with shortened commit sha

docs: update docs based on latest changes

fix: ensure npm can see dist build

fix: merge config bug

If you didn't set any bools, then version and help would work, but if you added any bools, it would strip the free defaults.

fix: istanbul skip

test: fix root path finder in travis