Merge branch 'master' of github.com:tdewolff/minify

Update tdewolff/parse to v2.3.7

Update version of tdewolff/parse to v2.3.6

Reflect use for Go modules

Add GO111MODULE=on

Return point for Z cmd should be the first pair of M coordinates, fixes 

tdewolff#230

Improve bash tab completion, fixes tdewolff#162

Add fuzz tests

Change buffer to parse/buffer

Update readme