Operator overloading revisited

[Christian Plesner Hansen]

> Do have a look at Cecil. Multimethods probably can't get much better than
> that.

I'm not anti-multimethods.  If I was doing a language from scratch it
would have multimethods.  That doesn't mean that adding them to JS is
a good idea, or that mentioning them would further my case.

A side note: while cecil's model is nice and clean I wouldn't say that
it was the platonic ideal of a multimethod model.  For instance, I
think it's reliance on implementation/representation types for
dispatch rather than interface could be improved upon.  But that's a
whole other discussion.