----------------
- updated ZMI views and icon for Zope 4
(`14 <https://github.com/zopefoundation/Products.PluginRegistry/issues/14>`_)
- expanded PEP-8 and isort compliance
- Specify supported Python versions using ``python_requires`` in setup.py
- Added support for Python 3.7 and 3.8
- Fix relative import that broke import/export
(`12 <https://github.com/zopefoundation/Products.PluginRegistry/pull/12>`_)