Arguments signature has changed. First arguments is now an options object of which
'config' can be a property. Previously 'config' itself was the first and only argument.
* New getCreator and getOldestRevision methods added to WikiPage class
+* (bug 4220) the XML dump format schema now have unique identity constraints
+ for page and revision identifiers. Patch by Elvis Stansvik.
=== Bug fixes in 1.20 ===
* (bug 30245) Use the correct way to construct a log page title.