Merge "Default installations to using RemexHtml for tidying"

diff --combined RELEASE-NOTES-1.31
index ea3aa8b,2fde0bd..052bc82
--- 1/RELEASE-NOTES-1.31
--- 2/RELEASE-NOTES-1.31
+++ b/RELEASE-NOTES-1.31
@@@ -31,6 -31,10 +31,10 @@@ production
  * (T188472) The 'comma' value for $wgArticleCountMethod is no longer supported for
    performance reasons, and installations with this setting will now work as if it
    was configured with 'any'.
+ * (T185753) MediaWiki now defaults to using RemexHtml to tidy up user input, rather than
+   being off by default. If you wish to disable HTML tidying entirely, set $wgTidyConfig
+   to null; if you wish to use the old, deprecated Tidy external binary, both
+   set $wgTidyConfig to null and also set $wgUseTidy to true.
  * $wgLogAutopatrol now defaults to false instead of true.
  * $wgValidateAllHtml was removed and will be ignored.
  
@@@ -331,8 -335,6 +335,8 @@@ changes to languages because of Phabric
  * The type string for the parameter $lang of DateFormatter::getInstance is
    deprecated.
  * Wikimedia\Rdbms\SavepointPostgres is deprecated.
 +* The DO_MAINTENANCE constant is deprecated. RUN_MAINTENANCE_IF_MAIN should be
 +  used instead.
  
  === Other changes in 1.31 ===
  * Browser support for Internet Explorer 10 was lowered from Grade A to Grade C.