maintenance/cleanupUsersWithNoId.php.
* $wgResourceLoaderMinifierStatementsOnOwnLine and $wgResourceLoaderMinifierMaxLineLength
were removed (deprecated since 1.27).
+* (T180921) $wgReferrerPolicy now supports having fallbacks for browsers that are not
+ using the latest version of the Referrer Policy specification.
=== New features in 1.31 ===
* Wikimedia\Rdbms\IDatabase->select() and similar methods now support
=== External library changes in 1.31 ===
==== Upgraded external libraries ====
+* Updated jquery.chosen from v0.9.14 to v1.8.2.
+* Updated composer/spdx-licenses from 1.1.4 to
+ 1.2.0 (development dependency).
+* Updated nikic/php-parser from 2.1.0 to 3.1.3
+ (development dependency).
* …
==== New external libraries ====
* (T180052) Mirandese (mwl) now supports gendered NS_USER/NS_USER_TALK namespaces.
=== Other changes in 1.31 ===
+* 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
+ RevisionRecord and its subclasses.
* MessageBlobStore::insertMessageBlob() (deprecated in 1.27) was removed.
* The global function wfBCP47 was renamed to LanguageCode::bcp47.
* The global function wfBCP47 is now deprecated.
* WatchedItem::IGNORE_USER_RIGHTS
* WatchedItem::CHECK_USER_RIGHTS
* WatchedItem::DEPRECATED_USAGE_TIMESTAMP
+* The $statementsOnOwnLine parameter of JavaScriptMinifier::minify was removed.
+ The corresponding configuration variable ($wgResourceLoaderMinifierStatementsOnOwnLine)
+ has been deprecated since 1.27 and was removed as well.
+* The HtmlFormatter class was removed (deprecated in 1.27). The namespaced
+ HtmlFormatter\HtmlFormatter class should be used instead.
== Compatibility ==
MediaWiki 1.31 requires PHP 5.5.9 or later. There is experimental support for