Ignore types on tornado includes

Older versions of Tornado supported by this library lack type annotations.

tests/test_handler.py

@@ -2,9 +2,9 @@ import json
 import unittest.mock
 
 from openapi_core.exceptions import OpenAPIError  # type: ignore
-import tornado.httpclient
-import tornado.web
-import tornado.testing
+import tornado.httpclient  # type: ignore
+import tornado.web  # type: ignore
+import tornado.testing  # type: ignore
 
 from tornado_openapi3.handler import OpenAPIRequestHandler
 

tests/test_testing.py

@@ -1,6 +1,7 @@
 import json
+
 from openapi_core.schema.responses.exceptions import InvalidResponse  # type: ignore
-import tornado.web
+import tornado.web  # type: ignore
 
 from tornado_openapi3.handler import OpenAPIRequestHandler
 from tornado_openapi3.testing import AsyncOpenAPITestCase

tornado_openapi3/handler.py

@@ -13,7 +13,7 @@ from openapi_core.templating.paths.exceptions import (  # type: ignore
 )
 from openapi_core.unmarshalling.schemas.exceptions import ValidateError  # type: ignore
 from openapi_core.validation.exceptions import InvalidSecurity  # type: ignore
-import tornado.web
+import tornado.web  # type: ignore
 
 from tornado_openapi3.requests import RequestValidator
 

tornado_openapi3/testing.py

@@ -1,7 +1,7 @@
 from typing import Any
 
-import tornado.httpclient
-import tornado.testing
+import tornado.httpclient  # type: ignore
+import tornado.testing  # type: ignore
 
 from openapi_core import create_spec  # type: ignore
 from tornado_openapi3.responses import ResponseValidator