Explore object-based routing

[kgriffs]

See also: #307

[warsaw]

Thanks for opening this issue. I'd love to see first class support for object-based traversal in some incarnation. I know several users of restish that want to move to Python 3, and I think if we can do it right (see my Mailman 3 falcon port branch for a starting point), we can recommend falcon as the replacement for restish.

[kgriffs]

We just need need to decide if this belongs in the core framework or would be better as an add-on package.

[warsaw]

I think I actually tried to post my implementation on the mailing list but I don't know if it made it through. We have it working in Mailman 3.1 and it's wonderful!

[vytas7]

For reference: Mailman's implementation is also mentioned by @maxking in a discussion comment.