Version: 4.20.1.1.20.1
* Add support for Co-Teachers.
* Give Teachers the ability to edit Questions for Courses on which they are a Co-Teacher.
* Fix error when removing partial refund of a course order
* Add access period and course pricing slot fills for Sensei Course Settings.
* Fix ordering question removing classic editor support
* Support wp.com purchase plans on Sensei Pro (Paid Courses) plugin.
* Fixes issue of email not being sent for content drip at scheduled time
* Improve compatibility with alternative translation file locations
* Improve plugin update details changelog, icon, and banner
* Fix error when removing partial refund of a course order