production.
=== Configuration changes in 1.27 ===
-* Removed $wgUseLinkNamespaceDBFields
+* $wgUseLinkNamespaceDBFields was removed.
* Deprecated $wgResourceLoaderMinifierStatementsOnOwnLine and
$wgResourceLoaderMinifierMaxLineLength, because there was little value in
making the behavior configurable. The default values (`false` for the former,
PasswordFactory themselves.
** A new constructor, User::newSystemUser(), has been added to simplify the
creation of passwordless "system" users for logged actions.
+* $wgMaxSquidPurgeTitles was removed.
+* $wgAjaxWatch was removed. This is now enabled by default.
=== New features in 1.27 ===
* $wgDataCenterId and $wgDataCenterRoles where added, which will serve as
into the redirect destination.
* prop=imageinfo&iiprop=uploadwarning will no longer include the possibility of
"was-deleted" warning.
+* Added difftotextpst to query=revisions which preforms a pre-save transform on
+ the text before diffing it.
=== Action API internal changes in 1.27 ===
* ApiQueryORM removed.
changes to languages because of Bugzilla reports.
=== Other changes in 1.27 ===
+* ProfilerOutputUdp was removed. Note that there is a ProfilerOutputStats class.
== Compatibility ==