Change notes from older releases. For current info see RELEASE-NOTES-1.22. == MediaWiki 1.21 == MediaWiki 1.21 is an alpha-quality branch and is not recommended for use in production. === Configuration changes in 1.21 === * (bug 29374) $wgVectorUseSimpleSearch is now enabled by default. * Deprecated $wgAllowRealName is removed. Use $wgHiddenPrefs[] = 'realname' instead. * (bug 39957) Added $wgUnwatchedPageThreshold, specifying minimum count of page watchers required for the number to be accessible to users without the unwatchedpages permission. * $wgBug34832TransitionalRollback has been removed. * (bug 29472) $wgUseDynamicDates has been removed and its functionality disabled. === New features in 1.21 === * (bug 38110) Schema changes (adding or dropping tables, indices and fields) can be now be done separately from from other changes that update.php makes. This is useful in environments that use database permissions to restrict schema changes but allow the DB user that MediaWiki normally runs as to perform other changes that update.php makes. Schema changes can be run separately. See the file UPGRADE for more information. * (bug 34876) jquery.makeCollapsible has been improved in performance. * Added ContentHandler facility to allow extensions to support other content than wikitext. See docs/contenthandler.txt for details. * New feature was developed for showing high-DPI thumbnails for high-DPI mobile and desktop displays (configurable with $wgResponsiveImages). * Added new backend to represent and store information about sites and site specific configuration. * jQuery upgraded from 1.8.2 to 1.8.3. * jQuery UI upgraded from 1.8.23 to 1.8.24. * Added separate fa_sha1 field to filearchive table. This allows sha1 searches with the api in miser mode for deleted files. * Add initial and programmatic sorting for tablesorter. * Add the event "sortEnd.tablesorter", triggered after sorting has completed. * The Job system was refactored to allow for different backing stores for queues as well as cross-wiki access to queues, among other things. The schema for the DB queue was changed to support better concurrency and reduce deadlock errors. * Added ApiQueryORM class to facilitate creation of query API modules based on tables that have a corresponding ORMTable class. * (bug 40876) Icon for PSD (Adobe Photoshop) file types. * (bug 40641) Implemented Special:Version/Credits with a list of contributors. * (bug 7851) Implemented one-click AJAX patrolling. * The ,