* $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 ====