The Drupal 8. Module of Referral Management

The Drupal 8. The development of the module used the ideas of the similar User Referral module (https://www.drupal.org/project/referral), developed for Drupal 7 version. Removed unused and unnecessary code, the code is updated to the Drupal version 8. The bugs have been removed, the logic of charging the bonuses to the user has been developed for a certain number of referrals that were registered on his referral link.