Add: code that requires a dependency or two

[lwasser]

Right now the code base is super simple and as such there are no dependencies.

Because most packages do have dependencies we should enhance the code some to include other packages that we can then add as dependencies to our pyproject.toml file.

Maybe pandas and we could have the package generate plots with altair? or perhaps others have an idea as to what functionality this could have.

[lwasser]

i think we could actually add the modules that @ucodery added here to this example. thus we have a simple add_numbers for teaching and a few other modules with dependencies for a more robust package setup.

Let's start with basic code and then we can make it more robust, add more tests etc later. even add a class - that might be good. (in a separate issue)

[ucodery]

Are you wanting to make examplePy a dependency of this package? That won't work without some complex build setup as examplePy isn't a published project. Probably better to add pandas like you were originally thinking.