docs: def publish(build):
      """ publish the package itself """
      build.packages.install("wheel")
      build.packages.install("twine")
      build.executables.run([
          "python", "setup.py",
          "sdist", "bdist_wheel", "--universal", "--release"
      ])
      build.executables.run([
          "twine", "upload", "dist/*"
      ])