* (T186359) New language support: Siberian Tatar [cебертатар] (sty).
* (T186635) New language support: Guianan Creole (gcr).
* (T186647) New language support: Kumyk [къумукъ] (kum).
+* (T187750) New language support: Spanish formal address (es-formal).
=== Other changes in 1.31 ===
+* Browser support for Internet Explorer 10 was lowered from Grade A to Grade C.
* Introducing multi-content-revision capability into the storage layer. For details,
see <https://www.mediawiki.org/wiki/Requests_for_comment/Multi-Content_Revisions>.
* The Revision class was deprecated in favor of RevisionStore, BlobStore, and
* CommentStore::insert
* CommentStore::insertWithTemplate
* The method ResourceLoaderModule::getPosition(), deprecated in 1.29, has been removed.
+* The DeferredStringifier class is deprecated, use Message::listParam() instead.
+* The type string for the parameter $lang of DateFormatter::getInstance is
+ deprecated.
== Compatibility ==
MediaWiki 1.31 requires PHP 5.5.9 or later. Although HHVM 3.18.5 or later is supported,