Hi all,
I haven't found an answer to this elsewhere, so I'm posing the question here. 

Is it possible to use a newer version of the mediawiki api (perhaps by copying api.php from a newer version) with an older MW installation?  I am on MW 1.12 and would like to use the edit feature introduced in MW 1.13, but without the effort of upgrading our entire wiki.  Is this possible?

Thanks for your help.
Matthew