Should there be two different storage modes; one shallow (set) and one deep?

[hughfdjackson]

As a user, I would like to be able to get an object from an unknown source, treat it as deep cloned data, where each nested object becomes either a p.dict or a p.list.

Arguments for:

• Common use-case.

Arguments against:

• Solid, intuitive deep-clone semantics are difficult to achieve.

[hughfdjackson]

For the first draft, going to move this into a util library. Once in, removal from a library is verboten after 1.0.0.