Switch to `pkgutil namespace technique <https://packaging.python.org/guides/packaging-namespace-packages/pkgutil-style-namespace-packages>`_ for the ``jaraco`` namespace.
1.3
===
Refresh package metadata (skeleton).
1.2
===
Refresh project skeleton.
1.1
===
Rebuild project with updated skeleton, adding automated deployment, wheel distributions, tox test runs, and other things.