=== Changes since MediaWiki 1.34.0-rc.0 ===
* (T231742) rdbms: Restore debug toolbar "Queries" feature.
+* (T231366) The ProfilerOutputDb class, 'profiling' table, and profileinfo.php
+ entry point had been deprecated.
+* (T234361) localisation: Add debug message for backend of MessageCache.
+* (T234361) session: Add debug message for the used store class.
+* (T235559) Fix example Kask configuration in RESTBagOStuff class comment.
+* (T235137) Don't apply styling for Special:Contributions on other pages.
+* Upgrade mediawiki-codesniffer from 26.0.0 to 28.0.0 (dev-only).
+* (T219604) The "jquery.ui.*" and "jquery.effects.*" modules are now
+ deprecated as aliases for the "jquery.ui" module.
+* (T235392) Deprecate setting Parser::mTitle to null.
+* Supporting commits for T235392 were also backported to prevent divergence
+ from master (MediaWiki 1.35).
== MediaWiki 1.34.0-rc.0 ==
* Updated OOjs from v2.2.2 to v3.0.0.
* Updated composer/semver from 1.4.2 to 1.5.0.
* Updated composer/spdx-licenses from 1.4.0 to 1.5.1 (dev-only).
-* Updated mediawiki/codesniffer from 25.0.0 to 26.0.0 (dev-only).
+* Updated mediawiki/codesniffer from 25.0.0 to 28.0.0 (dev-only).
* Updated cssjanus/cssjanus from 1.2.1 to 1.3.0.
* Updated wikimedia/at-ease from 1.2.0 to 2.0.0.
* Updated wikimedia/remex-html from 2.0.1 to 2.1.0.
* Specifying a SpecialPage object for the list of special pages (either through
the SpecialPage_initList hook or by adding to $wgSpecialPages) is now
deprecated.
+* The 'jquery.tabIndex' module is deprecated.
* WebInstaller::getInfoBox(), getWarningBox() and getErrorBox() are deprecated.
Use Html::errorBox() or Html::warningBox() instead.
* Use of ActorMigration with 'ar_user', 'img_user', 'oi_user', 'fa_user',
"..." as the only author name. If the "author" array contains more than one
entry and "..." is one of the entries in the array, "..." will be parsed as
"others" (version-poweredby-others i18n message) like previously.
+* (T232563) Browser support ("Grade C") for Internet Explorer 6 and 7
+ was discontinued. Basic content and security features may no longer
+ work correctly in these browsers.
== Compatibility ==
MediaWiki 1.34 requires PHP 7.2.9 or later, and the following PHP extensions: