tables that have a corresponding ORMTable class.
* (bug 40876) Icon for PSD (Adobe Photoshop) file types.
* (bug 40641) Implemented Special:Version/Credits with a list of contributors.
+* (bug 7851) Implemented one-click AJAX patrolling.
=== Bug fixes in 1.21 ===
* (bug 40353) SpecialDoubleRedirect should support interwiki redirects.
* (bug 41793) Contribution links to users with 0 edits on Special:ListUsers didn't
show up red.
* (bug 41899) A PHP notice no longer occurs when using the "rvcontinue" API parameter.
+* (bug 42036) Account creation emails now contain canonical (not
+ protocol-relative) URLs.
+* (bug 41990) Fix regression: API edit with redirect=true and lacking
+ starttimestamp and basetimestamp should not cause an edit conflict.
+* (bug 41706) EditPage: Preloaded page should be converted if possible and needed.
+* (bug 41886) Rowspans are no longer exploded by tablesorter until the table is
+ actually sorted.
+* (bug 2865) User interface HTML elements don't use lang attribute
+ (completed the fix by adding the lang attribute to firstHeading)
=== API changes in 1.21 ===
* prop=revisions can now report the contentmodel and contentformat, see docs/contenthandler.txt