Wp Rocket 3.17.2.1

Enhancement: Used CSS is not cleared after editing a taxonomy
Enhancement: Display a warning when the user adds "/" into the Never Cache URL(s) box
Enhancement: Delay JS - Exclude Jetpack Boost's lazyload scripts
Enhancement: Add a secret key to the folder name of the common cache for logged in users
Bugfix: AddDefaultCharset directive added to .htaccess missing $charset value causing internal server error. Function missing logic to check returned value.
Bugfix: Lazyload images is removing the default LL of WordPress for iframe
Bugfix: PHP Notice: Undefined index: host when exclude Defer JS domain name while Minify JS is enabled
Bugfix: linear-gradient() function is removed in used CSS
Bugfix: Impossible to delay script which contains term "type" on his URL name. Condition not specific enough
Bugfix: RUCSS - elements are removed from the used CSS when that's inserted to a page #4474
Regression Fix: Revert Delay JS script to 3.9.4.1 #4497
3rd Party compatibility: Add check for updated classname in PDFEmbedder compatibility #4491

Enhancement: Update our delay JS execution script to fix a bug with events being triggered twice and to load JS files when the page is loaded in a hidden browser tab
Enhancement: Update the lazyload script to the latest version
Enhancement: Add filter rocket_rucss_safelist to filter the Remove Unused CSS safelist value
Bugfix: Prevent removing style tags inserted with inline JS when Remove Unused CSS is enabled
Bugfix: Prevent useless call to wp_clear_scheduled_hook() when Remove Unused CSS is disabled
Bugfix: Prevent console error in some cases when lazyload is enabled
3rd party compatibility: Improve compatibility with Avada and delay JS on WC product pages
3rd party compatibility: Improve compatibility with Wordfence and our background processes
3rd party compatibility: No longer exclude WP Retina 2x images from lazyload

Enhancement: Add additional exclusions for minify JS, combine JS, defer JS
3rd party compatibility: Improve compatibility with Divi 4.10
3rd party compatibility: Improve compatibility with Uncode 2.5
Bugfix: Stop our background processes when updating or rolling back to avoid errors
Bugfix: Update documentation link related to WooCommerce in our settings page
Bugfix: Prevent errors with delay JS execution when parsing big HTML pages