Mypy-zope

------------------

- Support for `classImplements` declarations (40).
- Support for `overload` decorator in interfaces (46)

-------------------

- Fix "Cannot determine consistent method resolution order (MRO)" error (34, 41)

-------------------

- Better type inference for contextmanagers and open() function: do not override
the default behavior for tese cases
- Support interfaces defined inside classes

-------------------

- Upgrade to Mypy-0.812.

-------------------

- Avoid failure when handling metaclasses of unknown type (28).

------------------

- Upgrade to Mypy-0.800
- Add support for Python 3.9.