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Breaking changes:
- Drop support for Python 3.4.
New features:
- Add support for Python 3.7 and 3.8.
Bug fixes:
- Added compatibility with Zope 5 by not registering for the help system.
- Fix for retaining order of ordered folders upon cloning.
- Fix for data error encountered when dealing with data imported by ZEXP import/export from another system.
- Fix for string formatting error in ``Repository.py``.