------------------
* importlib_resources_ is required for Python 3.6
* This package is now supported when used as a ``.zip``
* ``cduration`` support has been re-added
* ``jnrbase`` v1.1.0, or later, is now required
* ``sphinx`` v1.8, or later, is required to build documentation
* ``pytest`` v4.0, or later, is required to run tests
.. _importlib_resources: https://pypi.org/project/importlib_resources/