The Events Calendar - Virtual Events 1.15.8

* Version - Virtual Events 1.10.0 is only compatible with The Events Calendar 5.15.0 and higher
* Feature - Add compatibility to the new TEC admin menu system. [ET-1335]
* Language - 1 new strings added, 34 updated, 0 fuzzied, and 1 obsoleted

* Feature - Add an option to generate a Webex meeting from the event editor and display meeting details on the event. [VE-502]
* Feature - Connect existing Webex Meetings to your events using the new 'Smart' url field. [VE-484]
* Fix - Fix high number of YouTube or Zoom user API calls by switching to a persistent cache. [VE-500]
* Fix - Fix issue that would cause the show to setting to default to everyone even if unchecked. [VE-498]
* Fix - Fix Zoom Alternative hosts returning a 404 error when attempting to save them to a meeting or webinar. [VE-505]
* Fix - Fix fatal when using Zoom or Webex in PHP 7.2 or older. [VE-506]
* Tweak - Added filters: `tribe_events_virtual_meetings_{$app_id}_actions`, `tec_events_virtual_api_select_account_url`, `tec_events_virtual_{$api_id}_select_account_url`, `tribe_events_virtual_meetings_api_accounts`, `tribe_events_virtual_meetings_{$api_id}_accounts`, `tec_events_virtual_meetings_api_post_response`, `tec_events_virtual_meetings_{$app_id}_api_post_response`, `tec_events_virtual_meetings_webex_{$this:meeting_type}_data`, `tec_events_virtual_webex_get_users_arguments`, `tec_events_virtual_webex_{$type}_link_allow_generation`, `tec_events_virtual_meetings_webex_hosts`, `tec_events_virtual_webex_meeting_link_creation_urls`, `tec_events_virtual_webex_export_fields`, `tec_events_virtual_show_virtual_content`, `tec_events_virtual_meetings_webex_meeting_show_password`, `tec_events_virtual_webex_regex_meeting_join_url`, `tec_events_virtual_meetings_webex_settings_fields`, `tec_events_virtual_link_button_new_window`, `tec_events_virtual_webex_link_new_window`, `tec_events_virtual_meetings_webex_user_cache`
* Tweak - Removed filters: `tribe_events_virtual_meetings_zoom_actions`, `tribe_events_virtual_meetings_zoom_api_post_response`, `tribe_events_virtual_meetings_zoom_api_allow_webinars`, `tribe_events_virtual_meetings_zoom_accounts`
* Tweak - Added actions: `tec_events_virtual_before_update_api_accounts`
* Tweak - Changed views: `components/icons/lock`, `webex/email/details/join-content`, `webex/email/details/join-header`, `webex/email/details/password-content`, `webex/email/details/password-header`, `webex/email/ticket-email-webex-details`, `webex/single/webex-details`, `zoom/email/details/dial-in-content`, `zoom/email/details/join-content`, `zoom/single/zoom-details`, `zoom/zoom-details`
* Language - 58 new strings added, 68 updated, 23 fuzzied, and 6 obsoleted

* Tweak - Update the backend block editor UI for a single event to look similar to its frontend version in order to create a true WYSIWYG experience when using the block editor. [TEC-4250]