******************
Features:
- Support OpenAPI 3.1.0 (:issue:`579`).
Bug fixes:
- Fix ``get_fields`` to avoid crashing when a field is named ``fields``
(:issue:`673`). Thanks :user:`Reskov` for reporting.
Other changes:
- Don't pass field metadata as keyword arguments in the tests. This is
deprecated since marshmallow 3.10. apispec is still compatible with
marshmallow >=3,<3.10 but tests now require marshmallow >=3.10. (:pr:`675`)