Cartographic Objects for Zope3

This past week I spent some time catching up with Zope3 and Five, and thinking about ZCO in this context. I'm determined to bring ZCO a little closer to Zope3 in the next release, but have ruled out making ZCO depend on Five until after 1.0. We now have interfaces that can be readily converted to Zope3 interfaces, and I'm going to be re-doing ZCO's proxy methods in a way more near to the Zope3 adapter pattern.