* Added SpecialPageAfterExecute hook which gets called after SpecialPage::execute.
* Added ORMTable, ORMRow and ORMResult classes for additional abstraction of
database interaction.
+* Added CacheHelper and associated SpecialCachedPage and CachedAction helper classes.
* (bug 32341) Add upload by URL domain limitation.
* &useskin=default will now always display the default skin. Useful for users with a
preference for the non-default skin to look at something using the default skin.
* (bug 38231) Add xml parse tree to action=parse.
* Watchlist notification timestamp may be queried by page and may be updated via the API.
* (bug 38904) prop=revisions&rvstart=... no longer blows up when continuing.
+ * (bug 39032) ApiQuery generates help in constructor.
=== Languages updated in 1.20 ===