* Added MWRestrictions as a class to check restrictions on a WebRequest, e.g.
to assert that the request comes from a particular IP range.
* Added bot passwords, a rights-restricted login mechanism for API-using bots.
+* Whitelisted the following HTML attributes for all elements in wikitext:
+ aria-describedby, aria-flowto, aria-label, aria-labelledby, aria-owns.
+* Removed "presentation" restriction on the HTML role attribute in wikitext.
+ All values are now allowed for the role attribute.
=== External library changes in 1.27 ===