Usage of subdirectories to store multiple packages in a single repo

It’s probably easier to put SomePackageBase in the subdirectory, you don’t have to change as many things - especially the repository name and URL.

Docs are the thing I would definitely combine, there is not real point having separate docs, it’s probably worse for users as well.

See ModelParameters.jl for an example of this setup - a subpackage included in the main docs: