* Updated mediawiki/at-ease from 1.1.0 to 1.2.0.
* Updated wikimedia/php-session-serializer from 1.0.4 to 1.0.6.
* Updated wikimedia/remex-html from 1.0.2 to 1.0.3.
+* Updated wikimedia/html-formatter from 1.0.1 to 1.0.2.
* …
==== New external libraries ====
* mediawiki/at-ease was replaced with wikimedia/at-ease.
=== Bug fixes in 1.31 ===
-* (T90902) Non-breaking space in header ID breaks anchor
+* (T90902) Non-breaking space in header ID breaks anchor.
+* (T189375) CSSMin now allows quoted urls in `url()` syntax to start with a space.
=== Action API changes in 1.31 ===
* (T185058) The 'name' value to tgprop for action=query&list=tags has been
removed. It has never made a difference in the output, the name was always
returned regardless.
+* The 'watch' and 'unwatch' parameters for action=move have been removed. They
+ were deprecated and also accidentally nonfunctional since 1.17 in 2010. Use
+ 'watchlist' instead.
=== Action API internal changes in 1.31 ===
* ApiBase::getProfileDBTime was removed (deprecated since 1.25)