creation of passwordless "system" users for logged actions.
* $wgMaxSquidPurgeTitles was removed.
* $wgAjaxWatch was removed. This is now enabled by default.
-* (T27397) WebP is enabled by default as an uploadable filetype
+* $wgUseInstantCommons now hotlinks Commons images by default instead of
+ downloading originals and thumbnailing them locally. This allows wikis to save
+ on CPU and bandwidth while reducing time to first byte for pages, even without
+ a thumbnail handler. See $wgForeignFileRepos documentation for tweaks.
+* (T27397) WebP is enabled by default as an uploadable filetype.
=== New features in 1.27 ===
* $wgDataCenterId and $wgDataCenterRoles where added, which will serve as
'class' => 'ForeignAPIRepo',
'name' => 'wikimediacommons',
'apibase' => 'https://commons.wikimedia.org/w/api.php',
+ 'url' => 'https://upload.wikimedia.org/wikipedia/commons',
+ 'thumbUrl' => 'https://upload.wikimedia.org/wikipedia/commons/thumb',
'hashLevels' => 2,
+ 'transformVia404' => true,
'fetchDescription' => true,
'descriptionCacheExpiry' => 43200,
'apiThumbCacheExpiry' => 86400,