It is still set to true for extension compatibility but doing so in extensions is deprecated.
* $wgXhtmlDefaultNamespace is no longer used by core. Setting it will no longer change the
xmlns used by MediaWiki. Reliance on this variable by extensions is deprecated.
+* $wgHandheldStyle was removed.
+* $wgJsMimeType is no longer used by core. Most usage has been removed since
+ HTML output is now exclusively HTML5.
=== New features in 1.22 ===
* (bug 44525) mediawiki.jqueryMsg can now parse (whitelisted) HTML elements and attributes.
which can be cascading (previously 'sysop' was hard-coded as the only one).
* XHTML5 support has been improved. If you set $wgMimeType = 'application/xhtml+xml'
MediaWiki will try outputting markup acording to XHTML5 rules.
+* New hook 'TitleSquidURLs' for manipulating the list of URLs to be purged from
+ HTTP caches when a page is changed.
+* Changed the patrolling system to always show the link for patrolling in case the
+ current revision is patrollable. This also removed the usage of the rcid URI parameters.
=== Bug fixes in 1.22 ===
* Disable Special:PasswordReset when $wgEnableEmail is false. Previously one
strings will now start with digits 0 and 8-f as often as they should.
* (bug 45371) Removed Parser_LinkHooks and CoreLinkFunctions classes.
* (bug 41545) Allow <kbd>, <samp>, and <var> to be nested like allowed in html.
+* PLURAL magic word no longer causes a PHP notice when no matching form exists.
+* (bug 36641) Patrol page links no longer show on non-existent revisions.
+* (bug 35810) Pages not linked from Special:RecentChanges or Special:NewPages
+ are patrollable now.
=== API changes in 1.22 ===
* (bug 46626) xmldoublequote parameter was removed. Because of a bug, the
parameter has had no effect since MediaWiki 1.16, and so its removal is
unlikely to impact existing clients.
+* (bug 47216) action=query&meta=siteinfo&siprop=skins will now indicate which
+ skin is the default and which are unusable (e.g. listed in $wgSkipSkins).
* (bug 25325) Added support for wlshow filtering (bots/anon/minor/patrolled)
to action=feedwatchlist.
* WDDX formatted output will actually be formatted (and normal output will no
stored in the database.
* (bug 47219) Allow specifying change type of Wikipedia feed items
* prop=imageinfo now allows setting iiurlheight without setting iiurlwidth
-* prop=info now adds the content model of the title.
+* prop=info now adds the content model and page language of the title.
* New upload log entries will now contain information on the relavent
image (sha1 and timestamp).