Those look like good additions. I've added the following methods in version 2.1:
TwitterList.getOwner()
Twitter.getListsContainingMe()
Twitter.getListsContaining(screenName, justMyLists)
Which you can download from http://www.winterwell.com/software/jtwitter.php
There's documentation in the source code & javadoc.
Best regards,
-Daniel
--
--------------------------------------------------
Daniel Winterstein
Edinburgh
http://winterwell.com http://soda.sh