* mw.Api has a new option, useUS, to use U+001F (Unit Separator) when
appropriate for sending multi-valued parameters. This defaults to true when
the mw.Api instance seems to be for the local wiki.
+* After a client performs an action which alters a database that has replica databases,
+ MediaWiki will wait for the replica databases to synchronize with the master database
+ while it renders the HTML output. However, if the output is a redirect, it will instead
+ alter the redirect URL to include a ?cpPosTime parameter that triggers the database
+ synchronization when the URL is followed by the client.
=== External library changes in 1.28 ===
phpunit.php: --regex and --keep-uploads. Instead of --regex, use --filter.
Instead of --keep-uploads, use the same option to parserTests.php, but you
must specify a directory with --upload-dir.
+* The 'jquery.arrowSteps' ResourceLoader module was removed.
== Compatibility ==