Aiohttp-swagger3

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- added aiohttp 3.7 support
- bump swagger ui to 3.36.1
- bump rapidoc ui to 8.3.0
- bump redoc ui to v2.0.0-rc.40

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- raise more verbose exception if schema failed to validate
- bump swagger ui to 3.28.0
- bump rapidoc ui to 8.1.1
- bump redoc ui to v2.0.0-rc.31

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- some optimizations, it should parse request a little bit faster

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- added ability to register custom string formats. Closes `53 <https://github.com/hh-h/aiohttp-swagger3/issues/53>`_

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- allow for unknown string formats. Closes `51 <https://github.com/hh-h/aiohttp-swagger3/issues/51>`_

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- raise custom exception when validation fails. Closes `49 <https://github.com/hh-h/aiohttp-swagger3/issues/49>`_
- finally added documentation
- bump Swagger UI to 3.25.0
- bump RapiDoc UI to 7.4.0
- bump ReDoc UI to v2.0.0-rc23
- removed deprecated ``up_path`` parameter from ``SwaggerDocs`` and ``SwaggerFile``