HTTP OPTIONS request.
* (bug 44923) action=upload works correctly if the entire file is uploaded in
the first chunk.
+* Added 'continue=' parameter to streamline client iteration over complex query results
+* (bug 44909) API parameters may now be marked as type "upload", which is now
+ used for action=upload's 'file' and 'chunk' parameters. This type will raise
+ an error during parameter validation if the parameter is given but not
+ recognized as an uploaded file.
=== API internal changes in 1.21 ===
* For debugging only, a new global $wgDebugAPI removes many API restrictions when true.
* ApiQueryGeneratorBase::setGeneratorMode() now requires a pageset param.
* $wgAPIGeneratorModules is now obsolete and will be ignored.
* Added flags ApiResult::OVERRIDE and ADD_ON_TOP to setElement() and addValue()
+* Internal API calls will now include <warnings> in case of unused parameters
=== Languages updated in 1.21 ===