Merge "Set default fragment mode to [ 'legacy', 'html5' ]"

diff --combined RELEASE-NOTES-1.31
index a17c64b,1008b05..5e14aee
--- 1/RELEASE-NOTES-1.31
--- 2/RELEASE-NOTES-1.31
+++ b/RELEASE-NOTES-1.31
@@@ -21,6 -21,9 +21,9 @@@ production
    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.
+ * $wgFragmentMode is now set to [ 'legacy', 'html5' ] by default. This is a first step of
+   migration to human-readable section IDs that will later result in 'html5' being the
+   default mode.
  
  === New features in 1.31 ===
  * Wikimedia\Rdbms\IDatabase->select() and similar methods now support
@@@ -50,10 -53,6 +53,10 @@@
    1.2.0 (development dependency).
  * Updated nikic/php-parser from 2.1.0 to 3.1.3
    (development dependency).
 +* Updated wikimedia/ip-set from 1.1.0 to 1.2.0.
 +* Updated wikimedia/relpath from 2.0.0 to 2.1.1.
 +* Updated wikimedia/running-stat from 1.1.0 to 1.2.0.
 +* Updated wikimedia/wrappedstring from 2.2.0 to 2.3.0.
  * …
  
  ==== New external libraries ====