message["content-type"] = content_type_value
                            if message.get_content_maintype() == "application":
                                subtype = message.get_content_subtype()
                                if subtype == "json" or subtype.endswith("+json"):
                                    json_body = await request.json()
                        if json_body != Undefined:

* Add 4 Japanese articles to [External Links](https://fastapi.tiangolo.com/external-links/). PR [#783](https://github.com/tiangolo/fastapi/pull/783) by [@HymanZHAN](https://github.com/HymanZHAN).
* Add support for subtypes of main types in `jsonable_encoder`, e.g. asyncpg's UUIDs. PR [#756](https://github.com/tiangolo/fastapi/pull/756) by [@RmStorm](https://github.com/RmStorm).