[Bug] supporting json array in request body

When I try to send an array as a request body, I get an exception.

def request_validation(self, request, query, json, headers, cookies):
        req_query = request.args or {}
        if request.mimetype in self.FORM_MIMETYPE:
            req_json = request.form or {}
            if request.files:
                req_json = dict(
                    list(request.form.items()) + list(request.files.items())
                )
        else:
            req_json = request.get_json(silent=True) or {}
        req_headers = request.headers or {}
        req_cookies = request.cookies or {}
        request.context = Context(
            query.parse_obj(req_query.items()) if query else None,
>           json.parse_obj(req_json.items()) if json else None,
            headers.parse_obj(req_headers.items()) if headers else None,
            cookies.parse_obj(req_cookies.items()) if cookies else None,
        )
E       AttributeError: 'list' object has no attribute 'items'

[kemingy]

I see. I forget JSON body can be a list and pydantic supports __root__.

Will fix this. Thanks.

[kemingy]

I think it sounds like a problem #96

This one is related to PyPy support caused bugs.