Please add Jade Source highlighting

Hi! I want you to add a new language highlight (Jade). It will very cool:)

This is a feature request and should go to http://feedback.gitlab.com/ See contributing document for more info.

Status changed to closed

mentioned in commit b616bc81

mentioned in issue #21055 (moved)

mentioned in issue #36615 (closed)

mentioned in issue gitlab#5853

mentioned in merge request !14785