✨: create HasNamepace

[nstarman]

Requires #12

[nstarman]

Also, do we want to call it HasNamespace?

[jorenham]

Also, do we want to call it HasNamespace?

From the typing spec:

A few guidelines for protocol names below. In cases that don’t fall into any of those categories, use your best judgement.

• Use plain names for protocols that represent a clear concept (e.g. Iterator, Container).
• Use SupportsX for protocols that provide callable methods (e.g. SupportsInt, SupportsRead, SupportsReadSeek).
• Use HasX for protocols that have readable and/or writable attributes or getter/setter methods (e.g. HasItems, HasFileno).

So I suppose SupportsNamespace would be more in line with that. But AFAIK HasNamespace is also fine, and more concise too.

[nstarman]

FYI I'm a fan of squash merges, so totally feel free to do that here.

[lucascolley]

I think I like the sound of HasArrayNamespace

[nstarman]

SGTM