= Changelog archive =

This is an archive of older changelog entries. Most recent entries are maintained in readme.txt


= 2.8.22 =
* Added: WordPress filters `abtf_pwa_sw_scope` and `abtf_pwa_sw_path`.

= 2.8.21 =
* Bugfix: `start_url` not preloaded ([Google Closure Compiler](https://developers.google.com/closure/compiler/) externs). 

= 2.8.20 =
* Bugfix: manifest.json stored with escaped slashes. ([@VidyutK](https://github.com/optimalisatie/above-the-fold-optimization/issues/63))
* Improved: `start_url` moved to `abtf-pwa-config.json` and preloaded on Service Worker installation.

= 2.8.19 =
* Added: Service Worker preloads `start_url` from manifest.json to validate as Google PWA.

= 2.8.18 =
* Added: custom [Push Notification](https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/showNotification) API: `Abtf.push(title,options)`

= 2.8.17 =
* Bugfix: Web App Manifest meta not printed in header.

= 2.8.16 =
* Added: Service Worker cache now expires based on HTTP expire header.
* Added: max age setting in page cache policy form.
* Changed: Service Worker update event moved to window `jQuery(window).on('sw-update',fn);`
* Improved: `abtf-pwa-config.json` fetched with cache busting query string.

= 2.8.15 =
* Added: JSON validity check for manifest.json. (@VidyutK)
* Improved: service worker cache policy: unmatched requests and `never` cache strategy are now efficiently returned to the client without service worker interference.
* Improved: service worker cache policy: last-modified header date string is converted to unix timestamp.

= 2.8.14 =
* Improved: javascript client optimized for further size reduction and compatibility with Content Security Policy. Configuration is moved to a data-attribute.
* Added: the ability to white list the javascript client using a [Content Security Policy](https://content-security-policy.com/faq/) hash (available on Settings-tab).

= 2.8.13 =
* Bugfix: PHP 5.3 support (@psabbatella)

= 2.8.12 =
* Added: optional Service Worker registration to support other service workers by importing the PWA Service Worker via `includeScript`.
* Added: option to unregister (remove) the PWA Service Worker after disabling PWA.
* Improved: `Abtf.offline` API returns a promise that resolves with a status after preloading in the Service Worker completes.

= 2.8.11 =
* Added: support for HTTP referer header matching (request.referrer) in Google PWA cache policy.
* Added: referrer based exclusion of WordPress admin panel in Service Worker.

= 2.8.10 =
* Bugfix: Google Web Font optimization broken when using custom `WebFontConfig` since v2.8.2 (@eek2425).

= 2.8.9 =
* Improved: Added support for websites without jQuery.

= 2.8.8 =
* Improved: Web App Meta HTML input field to fine tune the meta configuration.

= 2.8.7 =
* Bugfix: Admin panel: invalid Web App Manifest JSON schema for editor (cache.store has been removed).

= 2.8.6 =
* Bugfix: PHP 5.3 support.

= 2.8.5 =
* Improved: moved Google PWA preload list to abtf-pwa-config.json.

= 2.8.4 =
* Added: Google PWA preload list for offline cache.
* Added: Google PWA meta ([add to home screen](https://developer.chrome.com/multidevice/android/installtohomescreen), manifest.json and more).
* Added: Web App meta for legacy browsers.
* Improved: added support for serving offline image for offline HTML pages.

= 2.8.3 =
* Improved: javascript client configuration based on JSON index reference to reduce size.
* Added: Google [Progressive Web App](https://developers.google.com/web/progressive-web-apps/) (PWA) optimization tools to obtain a [Google PWA validation](https://developers.google.com/web/tools/lighthouse/).
* Added: Offline access management using a [service worker](https://developers.google.com/web/fundamentals/getting-started/primers/service-workers).

= 2.8.2 =
* Removed Closure Compiler source from plugin package to reduce size.

= 2.8.1 =
* Repair of previous incomplete update.

= 2.8.0 =
* Added: URL reference in HTML5 script loader cache blobs.
* Added: HTML minification with selective comment removal.
* Added: HTML search and replace.
* Added: Javascript script execution prioritization using [requestIdleCallback](https://developers.google.com/web/updates/2015/08/using-requestidlecallback).
* Updated: Client javascript optimized and compressed with [Google Closure Compiler](https://developers.google.com/closure/compiler/) with ~25% size reduction.
* Updated: Inline identification parameter changed to `data-abtf`. ([@azirer](https://github.com/optimalisatie/above-the-fold-optimization/pull/54))
* Removed: Page and condition search cache. Queries are now directly performed on the database.

= 2.7.12 =
* Updated: Default permissions for cache directory changed to 755/644. ([@azirer](https://github.com/optimalisatie/above-the-fold-optimization/pull/54))
* Added: Option to remove plugin reference (`data-abtf="https://goo.gl/C1gw96"`) from HTML source code using `ABTF_NOREF` in wp-config.php.

= 2.7.11 =
* Added: Google Webfont auto-detect option.
* Added: Google Webfont optimization ignore list.
* Added: Link to Google PageSpeed scores from plugin index.
* Updated: webfont.js upgraded to `v1.6.28`.
* Updated: [CodeMirror](http://codemirror.net/) upgraded to `v5.27.4`.
* Updated: URL for Google's new full spectrum mobile speed test for SMB ([Think With Google](https://testmysite.thinkwithgoogle.com/)).
* Removed: Console reference to plugin.

= 2.7.10 =
* Update: updated support policy.

= 2.7.9 =
* Bugfix: PHP 7 does not support methods with a double underscore prefix.

= 2.7.8 =
* Added: module for [LiteSpeed Cache](https://wordpress.org/plugins-wp/litespeed-cache/). ([pending evaluation by requesting user](https://wordpress.org/support/topic/please-add-support-for-litespeed-cache/))

= 2.7.7 =
* Updated: cache directory moved to /wp-content/cache/abtf/
* Updated: default file permissions set to 666 (public read & write) to allow FTP access.
* Added: proxy cache cleanup cron.
* Added: proxy cache stats on proxy configuration page.
* Added: file and expire meta header added to proxy cache files.
* Improved: wp_remote_get implementation optimized by disabling keep-alive. (@aamir2007)

= 2.7.6 =
* Bugfix: notice error on theme switch. (@samkatakouzinos)
* Improved: global.css Critical Path CSS file automatically created on theme switch.

= 2.7.5 =
* Bugfix: Full CSS export is missing quotes in url translation.

= 2.7.4 =
* Added: warning in admin panel when Critical Path CSS is empty.

= 2.7.3 =
* Bugfix: notice error with WP_DEBUG enabled. (@samkatakouzinos)

= 2.7.2 =
* Updated: minor improvements.

= 2.7.1 =
* Added: Google Webfont zip-file upload and extract.

= 2.7.0 =
* Updated: Critical CSS file storage location moved to theme directory.
* Added: file based critical CSS configuration to allow editing via FTP.
* Added: Critical CSS filter function condition.
* Added: append/prepend CSS file(s) to critical CSS.
* Added: enhanced Critical CSS debug comment.

= 2.6.17 =
* Updated: new [Google Mobile Indexation Test](https://search.google.com/search-console/mobile-friendly).

= 2.6.16 =
* Bugfix: stray script end tags not removed. (@ferares)
* Added: support for AMP Supremacy. (@cwfaraday)
* Added: website monitor resource.

= 2.6.15 =
* Bugfix: Critical Path CSS Build Tool Task Manager permissions not set correctly when automatically updating WordPress critical CSS.

= 2.6.14 =
* Bugfix: external resource proxy async injected script capture not applying ignore list.

= 2.6.13 =
* Bugfix: external resource proxy displays error when using Better WordPress Minify. (@razifkamal)

= 2.6.12 =
* Bugfix: external resource proxy CDN option rejects http:// urls in admin panel. (@bluemad)
* Improved: hide results in [securityheaders.io](https://securityheaders.io/) test from PageSpeed admin bar menu.
* Improved: external resource proxy mime type security loosened to allow `text/html` for files with matching file extension.
* Improved: external resource proxy captures script injected local and CDN scripts when HTML5 script loader is enabled for localStorage cache.
* Improved: external resource proxy CDN resources are processed as local files.
* Improved: external resource proxy prints debug notices on failure.
* Added: Critical CSS conditions for category pages.

= 2.6.11 =
* Improved: HTML5 script loader uses ES6 promises for async script loading.
* Improved: HTML5 script loader preloads scripts from localStorage while waiting for WordPress dependencies.

= 2.6.10 =
* Improved: HTML5 script loader handling of localStorage quota.

= 2.6.9 =
* Improved: HTML5 script loader uses [requestIdleCallback](https://developers.google.com/web/updates/2015/08/using-requestidlecallback) to shedule tasks for CPU idle time to improve render performance.

= 2.6.8 =
* Bugfix: external resource proxy fails on invalid linked local urls with or without www. (301-redirect).
* Bugfix: external resource proxy fails on local urls with query string.

= 2.6.7 =
* Bugfix: HTML5 script loader localStorage cache not clearing chunks.
* Bugfix: HTML5 script loader localStorage cache not handling quota exceeded correctly.
* Modified: HTML5 script loader localStorage cache chunk size lowered to 100kb ([test](https://jsperf.com/localstorage-10x100kb-vs-2x-500kb-vs-1x-1mb)).

= 2.6.6 =
* Added: option to disable the plugin using the query string `?noabtf`.
* Bugfix: HTML entity encoded javascript urls not handled correctly by proxy.

= 2.6.5 =
* Bugfix: external resource proxy returns PHP notices in WordPress debug modus.
* Bugfix: external resource proxy gzip compression removed (gzip now handled by server).
* Improved: HTML5 script loader localStorage cache chunks large scripts in parts of 500kb.

= 2.6.4 =
* Bugfix: async loading in javascript load optimization blocks while waiting for WordPress dependencies to be loaded.
* Bugfix: external javascript proxy should ignore blob: uri's.
* Added: HTML5 Web Worker and Fetch API based script loader with localStorage cache, inspired by [basket.js](https://addyosmani.com/basket.js/) (a script loading concept used by Google).
* Improved: external javascript proxy will load captured scripts from localStorage cache when using the HTML5 Web Worker script loader.

= 2.6.3 =
* Improved: javascript loading continues when WordPress dependencies are not met (with admin debug notice).

= 2.6.2 =
* Added: option to abide WordPress dependencies in javascript async load optimization.

= 2.6.1 =
* Added: javascript async load optimization.
* Added: jQuery stub for async loading jQuery.

= 2.6.0 =
* Bugfix: Critical CSS Quality Test not accessible without CSS delivery optimization enabled.
* Bugfix: Permissions for newly created files not correctly set to WordPress default file permissions.
* Improved: Page selection menu uses AJAX search instead of preloading all options.
* Improved: cURL replaced by [wp_remote_get()](https://codex.wordpress.org/Function_Reference/wp_remote_get).
* Improved: full CSS extraction CSS relative url conversion to match path of CSS file.
* Added: Build Tool Builder for [critical](https://github.com/addyosmani/critical) to create professional quality critical path CSS.

= 2.5.11 =
* Improved: WebFontConfig fully loaded when using inline webfont.js.
* Improved: external resource proxy debug notices for ignored resources.
* Bugfix: CSS file ignore/remove list CRLF issue. (@masoudsafi)

= 2.5.10 =
* Bugfix: filters not applied in cache plugin modules.

= 2.5.9 =
* Bugfix: page related caches not cleared from settings page button.
* Added: option to disable Google Web Font Loader and remove all fonts.

= 2.5.8 =
* Added: external resource proxy CDN for cached resources.
* Bugfix: support for WordPress subdirectory installations (@mmdijkman)

= 2.5.7 =
* Added: Regular expression test for external resource proxy JSON config.

= 2.5.6 =
* Added: Google Webfont remove tool (Web Font Optimization) to be able to load fonts locally.

= 2.5.5 =
* Improved: external resource proxy regex translation of urls (JSON config).
* Improved: external resource proxy custom expire time per url (JSON config).
* Improved: external resource proxy "async script" injection capture debug information.

= 2.5.4 =
* Bugfix: `WebFontConfig` not loaded for Google Fonts when pre set config omitted.
* Bugfix: HTML entity encoded urls not handled correctly by proxy.
* Bugfix: **fonts.googleapis.com/css** added to default ignore list for external CSS proxy (user agent based font serving).
* Bugfix: proxy ignore / include list not applied on filters.
* Bugfix: critical CSS quality test not displaying matching url.
* Improved: crtical CSS quality test.
* Improved: admin panel layout.
* Added: external resource proxy preload urls for direct access to proxy cache files for captured "script injected" async resources.
* Added: external resource proxy custom url (e.g. nginx proxy).
* Added: Critical CSS conditions for WordPress taxonomy and WooCommerce.
* Added: optimization plugin module for [nginx-helper](https://wordpress.org/plugins/nginx-helper/) (Nginx fastcgi cache plugin).
* Disabled plugin for AMP pages. (@RebellionNT1)

= 2.5.3 =
* Improved: external resource proxy support for protocol relative urls.

= 2.5.2 =
* Improved: external resource proxy support for local files, mime type check for security and forward of unproxied requests.
* Added: write permission check for critical CSS storage file.

= 2.5.1 =
* Bugfix: bug in external resource proxy for external resources with query string in HTML.

= 2.5.0 =
* Bugfix: full CSS extraction for pages with query string.
* Bugfix: admin PageSpeed menu not disabled.
* Bugfix: removed stripslashes on conditional CSS.
* Improved Above the fold client javascript.
* Improved full CSS extraction.
* Improved cleanup on plugin removal.
* Debug javascript moved to seperate file to save data for non-debug requests.
* Removed `/* Above The Fold v...*/` comment tag in HTML (use debug mode for an enhanced tag)
* Removed depency for the plugin *Google Webfont Optimizer*.
* Removed Localize Javascript (replaced by *external file proxy*)
* Added conditional Critical CSS for individual posts, post types, pages, page types, categories, tags and more.
* Added Critical CSS quality tester to detect a flash of unstyled content ([FOUC](https://en.wikipedia.org/wiki/Flash_of_unstyled_content)).
* Added integrated Google Web Font Optimization.
* Added external file proxy for javascript and CSS files with script-injection capture to pass the `Eliminate render-blocking JavaScript and CSS in above-the-fold content` rule from Google PageSpeed Insights
* Added (admin only) warning in HTML when critical CSS is empty.
* Added *page related cache* (e.g. full page cache or minification cache) clear tool for [supported plugins](https://github.com/optimalisatie/above-the-fold-optimization/tree/master/trunk/modules/plugins/) with modular support for other plugins.
* Appended Google documentation links with `?hl=` query based on WordPress locale.
* Support for many optimization plugins with modular support to add compatibility with any existing optimization or minification plugin.
⋅⋅⋅Some of the supported plugins include:
⋅⋅* [Autoptimize](https://wordpress.org/plugins/autoptimize/)
⋅⋅* [W3 Total Cache](https://wordpress.org/plugins/w3-total-cache/)
..* [WP Super Cache](https://wordpress.org/plugins/wp-super-cache/)
..* [WP Fastest Cache](https://wordpress.org/plugins/wp-fastest-cache/)
..* [Cache Enabler (KeyCDN.com)](https://wordpress.org/plugins/cache-enabler/)
..* [Better WordPress Minify](https://wordpress.org/plugins/bwp-minify/)
..* [WP Super Minify](https://wordpress.org/plugins/wp-super-minify/)
... [Click here](https://github.com/optimalisatie/above-the-fold-optimization/tree/master/trunk/modules/plugins/) for a list with supported plugins.

= 2.4.4 =
* Improved Javascript localization modules.
* Fixed bug in Javascript localization modules. (@jghrgtyec)

= 2.4.3 =
* Repair of previous incomplete update.

= 2.4.2 =
* Improved Javascript localization.
* Fixed bug in Javascript localization module for Facebook sdk.js.
* Added Javascript localization module for Facebook Tag API. (fbevents.js)
* Added lazy loading for inline scripts. (e.g. Facebook like and Twitter follow buttons)

= 2.4.1 =
* Added Content Security Policy (CSP) test in admin toolbar. ([SmashingMagazine](https://www.smashingmagazine.com/2016/09/content-security-policy-your-future-best-friend/))

= 2.4 =
* Removed server-side critical path CSS generator.
* Improved admin toolbar.
* Updated [loadCSS](https://github.com/filamentgroup/loadCSS) to v1.2.0
* Bugfix Localize Javascript module for old Google Analytics ga.js. (@RebellionNT1)

= 2.3.14 =
* Minor improvements.

= 2.3.13 =
* Buf fix. (@drazon)

= 2.3.12 =
* Repair of previous incomplete update.

= 2.3.11 =
* Added support for old PHP versions.

= 2.3.10 =
* Automatic cache reset of W3 Total Cache & WP Super Cache after plugin update.
* Advanced CSS editor with [CSS Lint](http://csslint.net/).

= 2.3.9 =
* Caching bug fix.

= 2.3.8 =
* Bug fix (re-order of plugin execution for ob_start stack).

= 2.3.7 =
* Added CSS render delay option.

= 2.3.6 =
* Added javascript header comments for version/cache related debugging.

= 2.3.5 =
* Bug fixes.
* Settings link moved to Appearance menu.
* Added demo code for Grunt.js + Penthouse.js Critical Path CSS generation.

= 2.3.4 =
* Removed Node modules. (Penthouse.js) to reduce plugin size (install via ``npm install``, see instructions)
* Bugfix LocalizeJS module. (@poundnine)

= 2.3.3 =
* Bug fixes & improvements. (@superpoincare)
* Added javascript localization modules.

= 2.3.2 =
* Repair of previous incomplete update.

= 2.3.1 =
* Added javascript localization modules.

= 2.3 =
* Added option to include Google fonts from ``@import`` within the CSS-code in [Google Webfont Optimizer](https://nl.wordpress.org/plugins/google-webfont-optimizer/).
* Added option to localize external javascript files.
* Enhanced full-CSS extraction.

= 2.2.1 =
* Added option to remove CSS files.
* CSS extraction bug (old PHP versions).

= 2.2 =
* Improved admin.
* Online generator instructions.
* Full CSS extraction.

= 2.1.1 =
* Addslashes bug.

= 2.1 =
* Code improvements.

= 2.0 =
* Automated Critical Path CSS generation via [Penthouse.js](https://github.com/pocketjoso/penthouse).
* Automated inline CSS optimization via [Clean-CSS](https://github.com/jakubpawlowicz/clean-css).
* Improved CSS delivery optimization.
* Improved configuration.
* Sourcecode published on [Github](https://github.com/optimalisatie/above-the-fold-optimization).

= 1.0 =
* The first version.

= 2.9.1 =
* Bugfix: Service Worker JSON config from query parameter not persistent after browser restart.

= 2.9.0 =
* Added: HTTP/2 Server Push optimization.
* Added: [Cache Digest](https://calendar.perfplanet.com/2016/cache-digests-http2-server-push/) hash computation in PWA Service Worker for HTTP/2 pushed resources.
* Added: HTTP/2 test in admin menu.
* Added: PageSpeed admin menu.
* Improved: location of PWA config json file sent to Service Worker as a query parameter. ([@16patsle](https://github.com/optimalisatie/above-the-fold-optimization/issues/66))
* Improved: plugin disabled for REST API requests.
* Improved: Service Worker cache cleanup in idle time.

= 2.8.22 =
* Added: WordPress filters `abtf_pwa_sw_scope` and `abtf_pwa_sw_path`.

= 2.8.21 =
* Bugfix: `start_url` not preloaded ([Google Closure Compiler](https://developers.google.com/closure/compiler/) externs). 

= 2.8.20 =
* Bugfix: manifest.json stored with escaped slashes. ([@VidyutK](https://github.com/optimalisatie/above-the-fold-optimization/issues/63))
* Improved: `start_url` moved to `abtf-pwa-config.json` and preloaded on Service Worker installation.

= 2.8.19 =
* Added: Service Worker preloads `start_url` from manifest.json to validate as Google PWA.

= 2.8.18 =
* Added: custom [Push Notification](https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/showNotification) API: `Abtf.push(title,options)`

= 2.8.17 =
* Bugfix: Web App Manifest meta not printed in header.

= 2.8.16 =
* Added: Service Worker cache now expires based on HTTP expire header.
* Added: max age setting in page cache policy form.
* Changed: Service Worker update event moved to window `jQuery(window).on('sw-update',fn);`
* Improved: `abtf-pwa-config.json` fetched with cache busting query string.

= 2.8.15 =
* Added: JSON validity check for manifest.json. (@VidyutK)
* Improved: service worker cache policy: unmatched requests and `never` cache strategy are now efficiently returned to the client without service worker interference.
* Improved: service worker cache policy: last-modified header date string is converted to unix timestamp.

= 2.8.14 =
* Improved: javascript client optimized for further size reduction and compatibility with Content Security Policy. Configuration is moved to a data-attribute.
* Added: the ability to white list the javascript client using a [Content Security Policy](https://content-security-policy.com/faq/) hash (available on Settings-tab).

= 2.8.13 =
* Bugfix: PHP 5.3 support (@psabbatella)

= 2.8.12 =
* Added: optional Service Worker registration to support other service workers by importing the PWA Service Worker via `includeScript`.
* Added: option to unregister (remove) the PWA Service Worker after disabling PWA.
* Improved: `Abtf.offline` API returns a promise that resolves with a status after preloading in the Service Worker completes.

= 2.8.11 =
* Added: support for HTTP referer header matching (request.referrer) in Google PWA cache policy.
* Added: referrer based exclusion of WordPress admin panel in Service Worker.

= 2.8.10 =
* Bugfix: Google Web Font optimization broken when using custom `WebFontConfig` since v2.8.2 (@eek2425).

= 2.8.9 =
* Improved: Added support for websites without jQuery.

= 2.8.8 =
* Improved: Web App Meta HTML input field to fine tune the meta configuration.

= 2.8.7 =
* Bugfix: Admin panel: invalid Web App Manifest JSON schema for editor (cache.store has been removed).

= 2.8.6 =
* Bugfix: PHP 5.3 support.

= 2.8.5 =
* Improved: moved Google PWA preload list to abtf-pwa-config.json.

= 2.8.4 =
* Added: Google PWA preload list for offline cache.
* Added: Google PWA meta ([add to home screen](https://developer.chrome.com/multidevice/android/installtohomescreen), manifest.json and more).
* Added: Web App meta for legacy browsers.
* Improved: added support for serving offline image for offline HTML pages.

= 2.8.3 =
* Improved: javascript client configuration based on JSON index reference to reduce size.
* Added: Google [Progressive Web App](https://developers.google.com/web/progressive-web-apps/) (PWA) optimization tools to obtain a [Google PWA validation](https://developers.google.com/web/tools/lighthouse/).
* Added: Offline access management using a [service worker](https://developers.google.com/web/fundamentals/getting-started/primers/service-workers).

= 2.8.2 =
* Removed Closure Compiler source from plugin package to reduce size.

= 2.8.1 =
* Repair of previous incomplete update.

= 2.8.0 =
* Added: URL reference in HTML5 script loader cache blobs.
* Added: HTML minification with selective comment removal.
* Added: HTML search and replace.
* Added: Javascript script execution prioritization using [requestIdleCallback](https://developers.google.com/web/updates/2015/08/using-requestidlecallback).
* Updated: Client javascript optimized and compressed with [Google Closure Compiler](https://developers.google.com/closure/compiler/) with ~25% size reduction.
* Updated: Inline identification parameter changed to `data-abtf`. ([@azirer](https://github.com/optimalisatie/above-the-fold-optimization/pull/54))
* Removed: Page and condition search cache. Queries are now directly performed on the database.

= 2.7.12 =
* Updated: Default permissions for cache directory changed to 755/644. ([@azirer](https://github.com/optimalisatie/above-the-fold-optimization/pull/54))
* Added: Option to remove plugin reference (`data-abtf="https://goo.gl/C1gw96"`) from HTML source code using `ABTF_NOREF` in wp-config.php.

= 2.7.11 =
* Added: Google Webfont auto-detect option.
* Added: Google Webfont optimization ignore list.
* Added: Link to Google PageSpeed scores from plugin index.
* Updated: webfont.js upgraded to `v1.6.28`.
* Updated: [CodeMirror](http://codemirror.net/) upgraded to `v5.27.4`.
* Updated: URL for Google's new full spectrum mobile speed test for SMB ([Think With Google](https://testmysite.thinkwithgoogle.com/)).
* Removed: Console reference to plugin.

= 2.7.10 =
* Update: updated support policy.

= 2.7.9 =
* Bugfix: PHP 7 does not support methods with a double underscore prefix.

= 2.7.8 =
* Added: module for [LiteSpeed Cache](https://wordpress.org/plugins-wp/litespeed-cache/). ([pending evaluation by requesting user](https://wordpress.org/support/topic/please-add-support-for-litespeed-cache/))

= 2.7.7 =
* Updated: cache directory moved to /wp-content/cache/abtf/
* Updated: default file permissions set to 666 (public read & write) to allow FTP access.
* Added: proxy cache cleanup cron.
* Added: proxy cache stats on proxy configuration page.
* Added: file and expire meta header added to proxy cache files.
* Improved: wp_remote_get implementation optimized by disabling keep-alive. (@aamir2007)

= 2.7.6 =
* Bugfix: notice error on theme switch. (@samkatakouzinos)
* Improved: global.css Critical Path CSS file automatically created on theme switch.

= 2.7.5 =
* Bugfix: Full CSS export is missing quotes in url translation.

= 2.7.4 =
* Added: warning in admin panel when Critical Path CSS is empty.

= 2.7.3 =
* Bugfix: notice error with WP_DEBUG enabled. (@samkatakouzinos)

= 2.7.2 =
* Updated: minor improvements.

= 2.7.1 =
* Added: Google Webfont zip-file upload and extract.

= 2.7.0 =
* Updated: Critical CSS file storage location moved to theme directory.
* Added: file based critical CSS configuration to allow editing via FTP.
* Added: Critical CSS filter function condition.
* Added: append/prepend CSS file(s) to critical CSS.
* Added: enhanced Critical CSS debug comment.

= 2.6.17 =
* Updated: new [Google Mobile Indexation Test](https://search.google.com/search-console/mobile-friendly).

= 2.6.16 =
* Bugfix: stray script end tags not removed. (@ferares)
* Added: support for AMP Supremacy. (@cwfaraday)
* Added: website monitor resource.

= 2.6.15 =
* Bugfix: Critical Path CSS Build Tool Task Manager permissions not set correctly when automatically updating WordPress critical CSS.

= 2.6.14 =
* Bugfix: external resource proxy async injected script capture not applying ignore list.

= 2.6.13 =
* Bugfix: external resource proxy displays error when using Better WordPress Minify. (@razifkamal)

= 2.6.12 =
* Bugfix: external resource proxy CDN option rejects http:// urls in admin panel. (@bluemad)
* Improved: hide results in [securityheaders.io](https://securityheaders.io/) test from PageSpeed admin bar menu.
* Improved: external resource proxy mime type security loosened to allow `text/html` for files with matching file extension.
* Improved: external resource proxy captures script injected local and CDN scripts when HTML5 script loader is enabled for localStorage cache.
* Improved: external resource proxy CDN resources are processed as local files.
* Improved: external resource proxy prints debug notices on failure.
* Added: Critical CSS conditions for category pages.

= 2.6.11 =
* Improved: HTML5 script loader uses ES6 promises for async script loading.
* Improved: HTML5 script loader preloads scripts from localStorage while waiting for WordPress dependencies.

= 2.6.10 =
* Improved: HTML5 script loader handling of localStorage quota.

= 2.6.9 =
* Improved: HTML5 script loader uses [requestIdleCallback](https://developers.google.com/web/updates/2015/08/using-requestidlecallback) to shedule tasks for CPU idle time to improve render performance.

= 2.6.8 =
* Bugfix: external resource proxy fails on invalid linked local urls with or without www. (301-redirect).
* Bugfix: external resource proxy fails on local urls with query string.

= 2.6.7 =
* Bugfix: HTML5 script loader localStorage cache not clearing chunks.
* Bugfix: HTML5 script loader localStorage cache not handling quota exceeded correctly.
* Modified: HTML5 script loader localStorage cache chunk size lowered to 100kb ([test](https://jsperf.com/localstorage-10x100kb-vs-2x-500kb-vs-1x-1mb)).

= 2.6.6 =
* Added: option to disable the plugin using the query string `?noabtf`.
* Bugfix: HTML entity encoded javascript urls not handled correctly by proxy.

= 2.6.5 =
* Bugfix: external resource proxy returns PHP notices in WordPress debug modus.
* Bugfix: external resource proxy gzip compression removed (gzip now handled by server).
* Improved: HTML5 script loader localStorage cache chunks large scripts in parts of 500kb.

= 2.6.4 =
* Bugfix: async loading in javascript load optimization blocks while waiting for WordPress dependencies to be loaded.
* Bugfix: external javascript proxy should ignore blob: uri's.
* Added: HTML5 Web Worker and Fetch API based script loader with localStorage cache, inspired by [basket.js](https://addyosmani.com/basket.js/) (a script loading concept used by Google).
* Improved: external javascript proxy will load captured scripts from localStorage cache when using the HTML5 Web Worker script loader.

= 2.6.3 =
* Improved: javascript loading continues when WordPress dependencies are not met (with admin debug notice).

= 2.6.2 =
* Added: option to abide WordPress dependencies in javascript async load optimization.

= 2.6.1 =
* Added: javascript async load optimization.
* Added: jQuery stub for async loading jQuery.

= 2.6.0 =
* Bugfix: Critical CSS Quality Test not accessible without CSS delivery optimization enabled.
* Bugfix: Permissions for newly created files not correctly set to WordPress default file permissions.
* Improved: Page selection menu uses AJAX search instead of preloading all options.
* Improved: cURL replaced by [wp_remote_get()](https://codex.wordpress.org/Function_Reference/wp_remote_get).
* Improved: full CSS extraction CSS relative url conversion to match path of CSS file.
* Added: Build Tool Builder for [critical](https://github.com/addyosmani/critical) to create professional quality critical path CSS.

= 2.5.11 =
* Improved: WebFontConfig fully loaded when using inline webfont.js.
* Improved: external resource proxy debug notices for ignored resources.
* Bugfix: CSS file ignore/remove list CRLF issue. (@masoudsafi)

= 2.5.10 =
* Bugfix: filters not applied in cache plugin modules.

= 2.5.9 =
* Bugfix: page related caches not cleared from settings page button.
* Added: option to disable Google Web Font Loader and remove all fonts.

= 2.5.8 =
* Added: external resource proxy CDN for cached resources.
* Bugfix: support for WordPress subdirectory installations (@mmdijkman)

= 2.5.7 =
* Added: Regular expression test for external resource proxy JSON config.

= 2.5.6 =
* Added: Google Webfont remove tool (Web Font Optimization) to be able to load fonts locally.

= 2.5.5 =
* Improved: external resource proxy regex translation of urls (JSON config).
* Improved: external resource proxy custom expire time per url (JSON config).
* Improved: external resource proxy "async script" injection capture debug information.

= 2.5.4 =
* Bugfix: `WebFontConfig` not loaded for Google Fonts when pre set config omitted.
* Bugfix: HTML entity encoded urls not handled correctly by proxy.
* Bugfix: **fonts.googleapis.com/css** added to default ignore list for external CSS proxy (user agent based font serving).
* Bugfix: proxy ignore / include list not applied on filters.
* Bugfix: critical CSS quality test not displaying matching url.
* Improved: crtical CSS quality test.
* Improved: admin panel layout.
* Added: external resource proxy preload urls for direct access to proxy cache files for captured "script injected" async resources.
* Added: external resource proxy custom url (e.g. nginx proxy).
* Added: Critical CSS conditions for WordPress taxonomy and WooCommerce.
* Added: optimization plugin module for [nginx-helper](https://wordpress.org/plugins/nginx-helper/) (Nginx fastcgi cache plugin).
* Disabled plugin for AMP pages. (@RebellionNT1)

= 2.5.3 =
* Improved: external resource proxy support for protocol relative urls.

= 2.5.2 =
* Improved: external resource proxy support for local files, mime type check for security and forward of unproxied requests.
* Added: write permission check for critical CSS storage file.

= 2.5.1 =
* Bugfix: bug in external resource proxy for external resources with query string in HTML.

= 2.5.0 =
* Bugfix: full CSS extraction for pages with query string.
* Bugfix: admin PageSpeed menu not disabled.
* Bugfix: removed stripslashes on conditional CSS.
* Improved Above the fold client javascript.
* Improved full CSS extraction.
* Improved cleanup on plugin removal.
* Debug javascript moved to seperate file to save data for non-debug requests.
* Removed `/* Above The Fold v...*/` comment tag in HTML (use debug mode for an enhanced tag)
* Removed depency for the plugin *Google Webfont Optimizer*.
* Removed Localize Javascript (replaced by *external file proxy*)
* Added conditional Critical CSS for individual posts, post types, pages, page types, categories, tags and more.
* Added Critical CSS quality tester to detect a flash of unstyled content ([FOUC](https://en.wikipedia.org/wiki/Flash_of_unstyled_content)).
* Added integrated Google Web Font Optimization.
* Added external file proxy for javascript and CSS files with script-injection capture to pass the `Eliminate render-blocking JavaScript and CSS in above-the-fold content` rule from Google PageSpeed Insights
* Added (admin only) warning in HTML when critical CSS is empty.
* Added *page related cache* (e.g. full page cache or minification cache) clear tool for [supported plugins](https://github.com/optimalisatie/above-the-fold-optimization/tree/master/trunk/modules/plugins/) with modular support for other plugins.
* Appended Google documentation links with `?hl=` query based on WordPress locale.
* Support for many optimization plugins with modular support to add compatibility with any existing optimization or minification plugin.
⋅⋅⋅Some of the supported plugins include:
⋅⋅* [Autoptimize](https://wordpress.org/plugins/autoptimize/)
⋅⋅* [W3 Total Cache](https://wordpress.org/plugins/w3-total-cache/)
..* [WP Super Cache](https://wordpress.org/plugins/wp-super-cache/)
..* [WP Fastest Cache](https://wordpress.org/plugins/wp-fastest-cache/)
..* [Cache Enabler (KeyCDN.com)](https://wordpress.org/plugins/cache-enabler/)
..* [Better WordPress Minify](https://wordpress.org/plugins/bwp-minify/)
..* [WP Super Minify](https://wordpress.org/plugins/wp-super-minify/)
... [Click here](https://github.com/optimalisatie/above-the-fold-optimization/tree/master/trunk/modules/plugins/) for a list with supported plugins.

= 2.4.4 =
* Improved Javascript localization modules.
* Fixed bug in Javascript localization modules. (@jghrgtyec)

= 2.4.3 =
* Repair of previous incomplete update.

= 2.4.2 =
* Improved Javascript localization.
* Fixed bug in Javascript localization module for Facebook sdk.js.
* Added Javascript localization module for Facebook Tag API. (fbevents.js)
* Added lazy loading for inline scripts. (e.g. Facebook like and Twitter follow buttons)

= 2.4.1 =
* Added Content Security Policy (CSP) test in admin toolbar. ([SmashingMagazine](https://www.smashingmagazine.com/2016/09/content-security-policy-your-future-best-friend/))

= 2.4 =
* Removed server-side critical path CSS generator.
* Improved admin toolbar.
* Updated [loadCSS](https://github.com/filamentgroup/loadCSS) to v1.2.0
* Bugfix Localize Javascript module for old Google Analytics ga.js. (@RebellionNT1)

= 2.3.14 =
* Minor improvements.

= 2.3.13 =
* Buf fix. (@drazon)

= 2.3.12 =
* Repair of previous incomplete update.

= 2.3.11 =
* Added support for old PHP versions.

= 2.3.10 =
* Automatic cache reset of W3 Total Cache & WP Super Cache after plugin update.
* Advanced CSS editor with [CSS Lint](http://csslint.net/).

= 2.3.9 =
* Caching bug fix.

= 2.3.8 =
* Bug fix (re-order of plugin execution for ob_start stack).

= 2.3.7 =
* Added CSS render delay option.

= 2.3.6 =
* Added javascript header comments for version/cache related debugging.

= 2.3.5 =
* Bug fixes.
* Settings link moved to Appearance menu.
* Added demo code for Grunt.js + Penthouse.js Critical Path CSS generation.

= 2.3.4 =
* Removed Node modules. (Penthouse.js) to reduce plugin size (install via ``npm install``, see instructions)
* Bugfix LocalizeJS module. (@poundnine)

= 2.3.3 =
* Bug fixes & improvements. (@superpoincare)
* Added javascript localization modules.

= 2.3.2 =
* Repair of previous incomplete update.

= 2.3.1 =
* Added javascript localization modules.

= 2.3 =
* Added option to include Google fonts from ``@import`` within the CSS-code in [Google Webfont Optimizer](https://nl.wordpress.org/plugins/google-webfont-optimizer/).
* Added option to localize external javascript files.
* Enhanced full-CSS extraction.

= 2.2.1 =
* Added option to remove CSS files.
* CSS extraction bug (old PHP versions).

= 2.2 =
* Improved admin.
* Online generator instructions.
* Full CSS extraction.

= 2.1.1 =
* Addslashes bug.

= 2.1 =
* Code improvements.

= 2.0 =
* Automated Critical Path CSS generation via [Penthouse.js](https://github.com/pocketjoso/penthouse).
* Automated inline CSS optimization via [Clean-CSS](https://github.com/jakubpawlowicz/clean-css).
* Improved CSS delivery optimization.
* Improved configuration.
* Sourcecode published on [Github](https://github.com/optimalisatie/above-the-fold-optimization).

= 1.0 =
* The first version.