=== New features in 1.20 ===
* Added TitleIsAlwaysKnown hook which gets called when determining if a page exists.
+* Added NamespaceIsMovable hook which gets called when determining if pages in a
+ certain namespace can be moved.
* (bug 32341) Add upload by URL domain limitation.
* &useskin=default will now always display the default skin. Useful for users with a
preference for the non-default skin to look at something using the default skin.
* QUnit.newMwEnvironment now supports passing a custom setup and/or teardown function.
Arguments signature has changed. First arguments is now an options object of which
'config' can be a property. Previously 'config' itself was the first and only argument.
+* New getCreator and getOldestRevision methods added to WikiPage class
+* (bug 4220) the XML dump format schema now have unique identity constraints
+ for page and revision identifiers. Patch by Elvis Stansvik.
=== Bug fixes in 1.20 ===
* (bug 30245) Use the correct way to construct a log page title.
* (bug 30410) Removed deprecated $wgFilterCallback and the 'filtered' API error.
* (bug 32604) Some messages needs escaping of wikitext inside username
* (bug 36537) Rename wfArrayToCGI to wfArrayToCgi for consistency with wfCgiToArray.
+* (bug 25946) The message on the top of Special:RecentChanges is now displayed
+ in user language instead of content language
=== API changes in 1.20 ===
* (bug 34316) Add ability to retrieve maximum upload size from MediaWiki API.
* (bug 34927) Output media_type for list=filearchive
* (bug 28814) add properties to output of action=parse
* (bug 33224) add variants of content language to meta=siteinfo
+* (bug 36761) "Mark pages as visited" now submits previously established filter options
=== Languages updated in 1.20 ===
regularly. Below only new and removed languages are listed, as well as
changes to languages because of Bugzilla reports.
+* Tornedalen Finnish (fit) added.
* Mizo (lus) added.
* Santali (sat) added.
* (bug 34192) Namespace gender aliases for Albanian languages (sq & aln).