Relationship Schema Update

We're moving! That's right, the relationship schema has a new place to live, thanks to Ian Davis : http://purl.org/vocab/relationship/

We've been working on this update (in truth, Ian has done most of the work, I've mainly said things like "ooh. that looks good!). Some RDF problems have been fixed, we added many new terms, and all of the terms have nice URLS : http://purl.org/vocab/relationship/friendOf

Check it out, it's quite nice!