* $wgEnableAPI and $wgEnableWriteAPI are now deprecated and will be removed in
a future version. The API is now considered to be stable, secure and
essential.
+* $wgUsejQueryThree was removed, as it is now the default. This was documented as a
+ temporary variable during the migration period, deprecated since 1.29.
+* …
=== New features in 1.31 ===
-* …
+* Wikimedia\Rdbms\IDatabase->select() and similar methods now support
+ joins with parentheses for grouping.
=== External library changes in 1.31 ===
Maintenance::countDown()
* The OutputPage class constructor now requires a context parameter,
(instantiating without context was deprecated in 1.18)
+* mw.page (deprecated in 1.30) was removed.
== Compatibility ==
MediaWiki 1.31 requires PHP 5.5.9 or later. There is experimental support for