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.
* The Block class will no longer accept usable-but-missing usernames for
'byText' or ->setBlocker(). Callers should either ensure the blocker exists
locally or use a new interwiki-format username like "iw>Example".
+* The RevisionInsertComplete hook is now deprecated, use RevisionRecordInserted instead.
+ RevisionInsertComplete is still called, but the second and third parameter will always be null.
+ Hard deprecation is scheduled for 1.32.
* The following methods that get and set ParserOutput state are deprecated.
Callers should use the new stateless $options parameter to
ParserOutput::getText() instead.
* 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
-HHVM 3.6.5 or later.
+MediaWiki 1.31 requires PHP 5.5.9 or later. Although HHVM 3.18.5 or later is supported,
+it is generally advised to use PHP 5.5.9 or later for long term support.
MySQL/MariaDB is the recommended DBMS. PostgreSQL or SQLite can also be used,
but support for them is somewhat less mature. There is experimental support for