* (bug 41494) Honor $wgLogExceptionBacktrace when logging non-API exceptions
caught during API execution.
* (bug 37963) Fixed loading process for user options
+* (bug 26995) Update filename field on Upload page after having sanitized it.
=== API changes in 1.21 ===
* prop=revisions can now report the contentmodel and contentformat, see docs/contenthandler.txt