for use with Microdata.
* The HTML5 <mark> tag has been whitelisted.
* Added ParserCloned hook for when the Parser object is cloned.
+* Added AlternateEditPreview hook to allow extensions to replace the page
+ preview from the edit page.
+* Added EditPage::showStandardInputs:options hook to allow extensions to add
+ new fields to the "editOptions" area of the edit form.
=== Bug fixes in 1.21 ===
* (bug 40353) SpecialDoubleRedirect should support interwiki redirects.
* (bug 30040) Autonym for nds-nl is now 'Nedersaksies' (was 'Nedersaksisch').
* (bug 34977) Now formatted numbers in Spanish use space as separator
for thousands, as mandated by the Real Academia EspaƱola.
+* (bug 35031) Kurdish formatted numbers now use period and comma
+ as separators for thousands and decimals respectively.
=== Other changes in 1.21 ===