W3 Total Cache Pro 2.8.0

* Feature: Added Delay Scripts (Pro)
* Fix: Several PHP 8 warnings
* Fix: Fragment Cache extension PHP warnings when no engine was selected
* Fix: Fragment Cache engine selection disabled for pro license under certain conditions
* Fix: Added Database Cluster compatiblity for older db.php files
* Fix: Fixed one PageSpeed tool metric not outputting data and adjusted a few labels
* Fix: Multiple anchor links for PageSpeed block on General Settings page
* Fix: Cache Groups validation on save
* Fix: Cache Groups delete button not working for added groups
* Update: Renamed Image Service feature to WebP Converter
* Update: Added WebP Converter block to General Settings page along with link to navigation bar
* Update: StackPath CDN prices (Service ending November 22, 2023 and will be replaced by Bunny CDN in future update)

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* Feature: Added filter "w3tc_config_item_objectcache.enabled" to allow for disabling W3TC object cache
* Fix: Auto-apply W3TC Pro license after purchase via in-plugin purchase/upgrade buttons
* Fix: PHP 8 warnings for Page and Fragment caches
* Fix: Replaced delete_blog deprecated hook with wp_uninitialize_site and wp_update_site
* Fix: Database Cluster configuration file save issue
* Fix: Fragment cache will now be disabled for non-pro users instead of being only disabled on the front-end
* Fix: Premium services widget list is now synced with the support page
* Update: User interface updated for cleaner appearance and easier navigation and control
* Update: Added support for get/set/add/delete wp_xxx_multiple methods to Object cache