A Composer-based installer for the Lightning distribution of Drupal 8. Support ended on November 2, 2021 and this project is no longer maintained.
Acquia ended support for the Lightning distribution on November 2, 2021, simultaneously with Drupal 8. Lightning 3, 4, and 5 no longer receive any security updates or bug fixes. It is possible to safely uninstall Lightning from your site; please see the official announcement, FAQ for site owners, and developer instructions for more information.