Just want to make sure we're talking about code-level compatibility. At this point, binary compatibility should be a non-goal IMO... we have already changed the RDF interface IIDs to make small changes recently. -- bsmedberg
Second note, my proposal for "visitor"-type enumerators is the most radical departure from the current API design. It is fairly easy to implement in JS, and a little bit of a pain to implement in C++ (we should provide a little utility object that maps from a visitor to an array, and another that maps from a visitor to a C++ callback). -- bsmedberg