The Events Calendar Pro 6.3.3

* Fix - Recurrence meta box will show again on Classic Editor
* Fix - Update textdomain for strings coming from the Gutenberg extension merge
* Fix - Fixed a number of small layout bugs with the new Twenty Nineteen core theme
* Language - 2 new strings added, 58 updated, 0 fuzzied, and 1 obsoleted

* Fix - Display recurrence section in classic editor for all users that don't have blocks

* Tweak - Ensure that recurrence rule types use their plural form when appropriate in the Events block