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- fixed configuration checkbox for `Read only`
- no longer use `Anonymous` as default value for `Default user Roles`.
- drop support for Python 2 and add support for Python 3.5 through 3.9.
This package is now compatible with Zope 4 on Python 3 and Zope 5. If you
use Zope 4 on Python 2, please use the LDAPUserFolder 3 release series. If
you use Zope 2 please use the LDAPUserFolder 2 release series.