I am not affiliated with the creators of this module or the company, ThemeBrain.
TB Mega Menu is a Drupal Module made by ThemeBrain.
It looks like it was originally built for Drupal 7 and a branch was created for Drupal 8. But since July 2016 it hasn't been touched. Since I needed some customization, I am forking the Drupal 8 code.
gulp clean gulp [default] gulp tarball