Yes, Cata hasn't been released yet. But I was showing that the addon hasn't been abandoned.
Just because I'm not psychic and want to be certain, have you checked the "Load out of date addons" box? And what do you mean by "it doesn't load it at all"? Do you get any errors? (make sure that errors aren't being hidden in Interface Options) What happens when you type /macarroon?
I am asking these things because I know that Maul is still active with Macaroon and that there haven't been any (recent, that I can see, at least) reports that it is broken.