The Events Calendar - Event Tickets Plus 6.2.0

* Feature - Include a Tickets REST API endpoint for read operations
* Feature - Include WooTickets and EDD tickets fields in the WP personal data erase
* Fix - Properly update attendees transient when checkin/unchekin an attendee for WooCommerce and EDD Tickets, in order to see changes immediately. Thanks to Adam for the report!
* Tweak - WooCommerce Orders Sales by Ticket section to remove duplicate data
* Tweak - Attendees section to clarify infomation

* Add - New template file for inserting the QR codes in tickets emails. Props to @madebyelmcity for bringing this up [62181]
* Fix - Fix EDD tickets stock being borked after updating capacity. Thanks to @lvdesigner and @artstream8401 for flagging this! [106741]
* Fix - Prevent ticket unavailability message from displaying twice with multiple ticket providers [110014]
* Tweak - Adjusted order status output in the tickets order report tab to use translated version. Props to @websource for the report [109640]
* Feature - Include RSVP, Tribe Commerce, WooTickets and EDD tickets fields data in WP personal data export [108488]

* Feature - Add QR API settings field and button to generate key [102116]
* Feature - Add base REST API system and endpoint for QR check in [102107]
* Feature - Add security code and REST path to QR code url and require use of security code for REST check in [102112]
* Fix - When adding a WooCommerce ticket to the cart, redirect only if the "WooCommerce" setting is set. Thanks to Thomas and Ilkka for flagging this! [46648]
* Fix - Display unavailability message when tickets are not yet or no longer available [81334]
* Tweak - Add `tribe_tickets_plus_trash_ticket` filter to give the opportunity to trash tickets when deleted instead of actually deleting them [46393]