Zope.copy

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- Nothing changed yet.

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- Add support for Python 3.8, 3.9, 3.10, 3.11.

- Drop support for Python 3.4.

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- Use the latest and fastest protocol when pickling and unpickling and object
during the clone operation

- Add support for Python 3.7.

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- Drop support for Python 2.6, 3.2 and 3.3.

- Add support for Python 3.5 and 3.6.

- Restore ``zope.component`` as a testing requirement for running doctests.

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- Add support for PyPy3.

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- Add support for Python 3.3 and 3.4.

- Update ``boostrap.py`` to version 2.2.