* **Page Optimize** Dropped `Inline Lazy Load Images Library` option. Now will always inline lazyload library. (Ankit)
* **3rd** Prevented JavaScript files from being appended to Rank Math SEO sitemap.
* **Purge** Dropped default stale purge when purging a post.
* **Cloud** Dropped unused API calls.
* **Cloud** Dropped redundant IP validation in API calls.

= 4.4.6 - Dec 27 2022 =
* **Guest** Restored `document.referrer` for organic traffic purposes when Guest Mode is enabled. (michelefns)
* **Image Optimize** Fixed a potential PHP notice when uploading images in WP w/ PHP7.4+. (titsmaker)
* **ESI** Fixed an issue where ESI settings were not updated on customized widgets(#422 Abe)
* **3rd** Reverted ESI Adminbar change on Elementor front pages for backward compatibility (#423 Abe)
* **3rd** Fixed an issue where disabling ESI potential caused a PHP warning when using `Perfmatters`. (Jeffrey Zhang)
* **Misc** Check whether HTTP_REFERER is set or not before using it in Router class. (#425 Abe)

= 4.4.5 - Dec 1 2021 =
* **Data** Fixed potential PHP notice when generating CSS/JS optimized files w/ PHP v7.4+. (Sarah Richardson/silencedgd/slr1979)
* **API** Added `LITESPEED_ESI_OFF` constant to disable ESI, when defined before the WP `init` hook.
* **API** Added `LSCWP_DEBUG_PATH` constant to specify debug log path. (khanh-nt)
* 🐞**GUI** Fixed an issue where admin messages were not displayed. (Daniel McD)
* **CDN** Used WP remote function to communicate w/ Cloudflare per WP guidance.
* **3rd** Added compatibility for Perfmatters plugin's script manager (#417 Abe)
* **3rd** Added compatibility for Elementor's Editor button when ESI is on (#418 Abe)

= 4.4.4 - Nov 23 2021 =
* **Page Optimize** Delay deletion of outdated CSS/JS files for a default of 20 days to avoid 404 errors with cached search engine copies.
* **Cache** When caching, no longer send a purge request for CSS/JS removal to avoid cache engine conflicts.
* 🐞**Core** Optimized SQL queries while autoloading if expected options are missing; reduced by 7 and 3 queries on backend and frontend respectively. (#396425 Jackson)
* **Page Optimize** Fixed a 404 issue that occured when upgrading the plugin manually, with a package upload or through the plugin manager. (Tobolo/Małgorzata/Abe)
* **API** Added `litespeed_ccss_url` and `litespeed_ucss_url` API to manipulate the request URL for CCSS and UCSS.
* **REST** Fixed a potential warning when detecting cacheable status on REST call. (rafaucau)
* **OLS** Fixed an issue where the `COOKIEHASH` constant was undefined when used with OpenLiteSpeed as an MU plugin or with network activation.
* **3rd** Sanitized POST data for nextgengallery.
* **Cloud** Sanitized GET data when linking to QUIC.cloud. (#591762 WPScan)

= 4.4.3 - Oct 13 2021 =
* 🐞**Media** Fixed an issue where WebP is served erroneously under Guest Mode on older versions of Safari. (hash73)
* 🐞**Media** Reverted regex change to fix `Lazy Load Image Parent Class Name Excludes` failure. (thpstock)
* **Purge** Disabled `Purge Delay` in the optimization process by default.
* **Conf** Dropped `.htaccess Path Settings` options for security concern. (WP)
* **Conf** Dropped `CSS HTTP/2 Push`/`JS HTTP/2 Push` options. (Kevin)
* **Conf** Set `Guest Optimization` default to OFF.
* **Conf** Set `CCSS Per URL` default to OFF to avoid consuming more quota than intended after upgrade to v4. (n111)
* **Object** Fixed an issue with Object Cache warnings during upgrade, when Guest Mode is enabled.
* ☁️**Cloud** Fixed an issue with PHP notices when inquiring about quota usage for a service not currently in use.
* **GUI** Added GO detail warning. (n111)
* **GUI** Moved "quota wil be still in use" warning from Guest Mode to Guest Optimization section.
* **API** Added `LITESPEED_CFG_HTACCESS` PHP Constant to specify .htaccess path.
* **API** Added `litespeed_qs_forbidden` hook to bypass `?LSCWP_CTRL=` query string. (minhduc)
* **API** Added `litespeed_delay_purge` hook to delay the following Purge header until the next request.
* **API** Added `litespeed_wpconfig_readonly` hook to disable `WP_CACHE` constant update based on the wp-config.php file. (#633545)

= 4.4.2 - Sep 23 2021 =
* **Purge** In order to clear pages containing 404 CSS/JS, the purge header will always be sent even in cases where purge must be delayed.
* 🐞**Purge** Fixed a potential PHP warning caused when generating different optimized filenames.
* **Cron** Dropped unnecessary HTML response in cron which sometimes resulted in wp-cron report email. (Gilles)
* **Page Optimize** Purge caused by CSS/JS file deletion will now be silent.
* **Page Optimize** Fixed an issue where the homepage failed to purge when addressing the 404 CSS/JS issue.
* **Avatar** Fixed potential localized Avatar folder creation warning. (mattk0220/josebab)
* **API** Added filter `litespeed_optm_html_after_head` to move all optimized code(UCSS/CCSS/Combined CSS/Combined JS) to be right before the `</head>` tag. (ducpl/Kris Regmi)
* **Debug** Under debug mode, cache/purge tags will be plaintext.

= 4.4.1 - Sep 16 2021 =
* 🐞**ESI** Fixed ESI failure on non-cached pages caused by `DONOTCACHEPAGE` constant.
* 🐞**Page Optimize** Fixed an issue where the minified CSS/JS file failed to update when the file was changed. (ceap80)
* 🐞**Page Optimize** Fixed an issue where the combined CSS/JS file randomly returned a 404 error when visiting the same URL with different query strings. (Abe)
* **API** Added `litespeed_const_DONOTCACHEPAGE` hook to control the cache-or-not result of the `DONOTCACHEPAGE` constant.

= 4.4 - Sep 8 2021 =
* 🌱**Crawler** Added the ability to enable or disable specific crawlers. (⭐ Contributed by Astrid Wang #PR390)
* 🌱**UCSS** Added `UCSS Inline` option. (Ankit).
* 🌱**UCSS** Added `UCSS URI Excludes` option. (RC Verma).
* 🐞**Page Optimize** Fixed an issue where combined CSS/JS files would potentially return 404 errors after a Purge All. (Special thanks to Abe & Ruikai)
* **Page Optimize** Minimized the potential for 404 errors by query string when Purging All.
* **Page Optimize** Dropped redundant query strings for minified CSS/JS files.
* **Conf** Ugrade configuration safely to avoid the issue of new functions not being found in old codebase.
* **Conf** Configuration upgrade process now adds a notification to admin pages and disables configuration save until upgrade is complete. (Lisa)
* **JS** Fixed an issue where JS Defer caused a `litespeed_var_1_ is not defined` error when enabled w/ ESI options. (Tobolo)
* 🐞**JS** Fixed an issue where `JS Delay` doesn't work for combined JS when `JS Combine` is enabled. (Special thanks to Joshua & Ankit)
* **JS** `JS Delay` now will continue loading JS, even if there is an error in the current JS loading process.
* 🐞**CCSS** If CCSS fails to generate, Load CSS Asynchronously will now be disabled. (Stars #54074166)
* 🐞**UCSS** If UCSS generation fails the generated error will no longer be served inside the file. (Ryan D)
* **Log** Updated the Debug log to use less code for prefix.
* **3rd** Always respect `DONOTCACHEPAGE` constant defination to fix DIVI dynamic css calculation process.