👉 Removed bluebird as core Promise engine.

    *  Acording to its own documentation it has no noticeable performance
    benefit in current node versions.

👉 Dependencies upgrade and minor fixes.

    * Upgraded all dependencies (npm upgrade).

    * Fixed a few minor issues like manual path joins.

    * npm audit fix

👉 Migration from (legacy) Jade to Pug template engine.

    * Replaced Jade ("old" pug) by Pug.

    * Renamed and reviewed all internal (default) templates.

    * Added small hack to avoid pug errors in inline form templates when
      specified using (multiline) string templates:
      - Pug is more strict with indentation so, if you don't want to break
        your code one you will need to add extra space at the left that
        will make pug complain.
      - That extra space is now "intelligently" removed so you only need
        to arrange all indentation in reference to the first row.

👉 Updated this file and CHANGELOG.