Biggest remaining issues:

• I can't actually remove setup.py because we have commands that require it:
  E.g. python setup.py compile_catalog -t mkdocs

  • I can't set the license because during the above command, setuptools says:

    configuration error: `project.license` must be valid exactly by one definition (2 matches found):
    
        - keys:
            'file': {type: string}
          required: ['file']
        - keys:
            'text': {type: string}
          required: ['text']