[Python-3000] Implementations: A syntax for extending method dispatching beyond type/class inheritance

[Bill Janssen]

> FWIW, Zope has a set of these things for sequences and mappings that  
> have stood up reasonably well (done as interfaces, but same idea).   
> See http://svn.zope.org/Zope3/trunk/src/zope/interface/common/ .   
> Maybe that can help your effort.

Thanks, Gary.  Interesting effort.  I'll study it further this weekend
when I get the time.

Bill