Perfmatters 2.4.3

* Added new feature to Remove Unused CSS (BETA).
* Added new perfmatters_remove_unused_css filter.
* Adjusted CDN Rewrite buffer priority for better compatibility with other features.
* Made an improvement to the Disable XML-RPC function to return a 403 error when xmlrpc.php is accessed directly.
* Script Manager stylesheet updates for better compatibility.
* Fixed an issue in the Script Manager where the input controls were sometimes not displaying after toggling a script off.
* Added additional style for YouTube preview thumbnail play button to fix an alignment issue with certain setups.
* Buffer adjustments for compatibility.

* Fixed an issue that was interfering with sitemap display in certain configurations.
* Added <a> element support for lazy loading inline background images.

* Added new perfmatters_fade_in_speed filter.
* Fixed an issue that was preventing lazy loading fade in from working correctly with certain background images.
* Fixed an issue that was interfering with the display of certain inline SVG elements.
* Adjusted local analytics hook priority for better compatibility.
* Script Manager style updates for better compatibility.
* Translation updates.