Convert stylo into a namespace package?

[alcarney]

I like the idea of having stylo be a namespace package that way we can have:

• A standard library from stylo.core.xxx import yyy
• A number of "core?" extensions from stylo.ext.xxxx import yyy?
• Third party packages from stylo.ppp.xxx import yyy

However:

• I tried a similar approach with topos and topos-preview and had issues when pip installing them - one package would overwrite the contents of the other making half the code vanish.
• Would we get any tangible benefit from doing this?

Things to investigate more

• Namespace packages