Support namespace in project name

[jwerle]

I can see much benefit from allowing one to do:

[project]
name = "namespace::library"

allowing:

using namespace::library::{ some_export }

ZZ currently complains that it can't find the module 'namespace::library' because of the :: contained in the name.

@aep what are your thoughts on support something like this? I hope this makes sense

[aep]

that's alot of work to allow :: here, why not use a different symbol?

[jwerle]

I am currently using _ as a separator. It isn't a show stopper at all. I had the idea using :: instead and wanted to open an issue here to see what your thoughts were.

We can close if this does not makes sense or the effort is too large

[aep]

: should be ok

It might make sense when it has functionality, but I'm not sure what that would be.

Just allowing a path separator :: that doesn't separate anything creates alot of confusing corner cases

[jwerle]

Yeah lets just close this for now