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This release is not fully backwards compatible with the 0.3.5 version.
* Drop Flask versions older than ``2.2.0``.
* Use the new JSON provider interface introduced in the
`Flask 2.2.0 <https://github.com/pallets/flask/pull/4692>`_
(`10 <https://github.com/skozlovf/flask-json/issues/10>`_,
`12 <https://github.com/skozlovf/flask-json/issues/12>`_).
* Add numeric keys support (`11 <https://github.com/skozlovf/flask-json/issues/11>`_).
* Allow specifying both ``data_`` and ``kwargs`` in the ``json_response()``.
Incompatible changes:
* Remove ``JsonTestResponse``, ``flask.Response.json`` provides the same feature.