1000 for the latter) are now hard-coded.
* $wgDebugDumpSqlLength was removed (deprecated in 1.24).
* $wgDebugDBTransactions was removed (deprecated in 1.20).
+* $wgRemoteUploadTarget (added in 1.26) removed, replaced by $wgForeignUploadTargets
+* $wgUseXVO has been removed, as it provides functionality only used by
+ custom Wikimedia patches against Squid 2.x that probably noone uses in
+ production anymore. There is now $wgUseKeyHeader that provides similar
+ functionality but instead of the MediaWiki-specific X-Vary-Options header,
+ uses the draft Key header standard.
+* $wgScriptExtension (and support for '.php5' entry points) was removed. See the
+ deprecation notice in the release notes for version 1.25 for advice on how to
+ preserve support for '.php5' entry points via URL rewriting.
=== New features in 1.27 ===
* $wgDataCenterId and $wgDataCenterRoles where added, which will serve as
* $wgCdnMaxageLagged was added, which limits the CDN cache TTL
when any load balancer uses a DB that is lagged beyond the 'max lag'
setting in the relevant section of $wgLBFactoryConf.
+* Added several JavaScript libraries for uploading files to MediaWiki
+ from the client-side. See documentation for mw.Upload and its
+ subclasses for more information.
+* Added OOUI dialogs and layout for file upload interfaces. See
+ documentation for mw.Upload.Dialog, mw.Upload.BookletLayout and its
+ subclasses for more information.
==== External libraries ====
=== Bug fixes in 1.27 ===
=== Action API changes in 1.27 ===
+* Added list=allrevisions.
+* generator=recentchanges now has the option to generate revids.
+* ApiPageSet::setRedirectMergePolicy() was added. This allows generator
+ modules to define how generator data for a redirect source gets merged
+ into the redirect destination.
+* prop=imageinfo&iiprop=uploadwarning will no longer include the possibility of
+ "was-deleted" warning.
=== Action API internal changes in 1.27 ===
regularly. Below only new and removed languages are listed, as well as
changes to languages because of Bugzilla reports.
-
=== Other changes in 1.27 ===
-
== Compatibility ==
MediaWiki 1.27 requires PHP 5.3.3 or later. There is experimental support for