Updated RecurlyJS library to v4.

Changes since 8.x-3.0-alpha1:

• Issue #2864394: [8.4.x] Switched to user drupal.org Packagist not the public Packagist.org
• Issue #2860528 by Ahmad Abbad: Hero slider js override other sliders.
• Issue #2860528: [8.4.x] Add [rabbit hole] behavior configurations not to show slides landing page for autonomous

Fix the issue with loading the Main JS file for the ajax call

Fix "Category" attribute in plugin definition uses incorrect data type.
More details: https://www.drupal.org/node/2864203

Bug fixes for the Ajax reload