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- Zope 4 ZMI: Added icon
- Zope 4 ZMI: declare that creating a GS tool does not need an add dialog
(`80 <https://github.com/zopefoundation/Products.GenericSetup/issues/80>`_)
- clean up ``setup.py`` and remove support for ``setup.py test``
(`73 <https://github.com/zopefoundation/Products.GenericSetup/issues/73>`_)
- add support for unicode data in ``writeDataFile``
(`79 <https://github.com/zopefoundation/Products.GenericSetup/issues/79>`_)
- Specify supported Python versions using ``python_requires`` in setup.py
- Adding suport for Python 3.8