Aiohttp

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- Do not use `yarl.unquote` internal function in aiohttp. Fix
incorrectly unquoted path part in URL dispatcher (`2662 <https://github.com/aio-libs/aiohttp/pull/2662>`_)
- Fix compatibility with `yarl==1.0.0` (`2662 <https://github.com/aio-libs/aiohttp/pull/2662>`_)



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- Fixed race-condition for iterating addresses from the DNSCache. (`2620 <https://github.com/aio-libs/aiohttp/pull/2620>`_)
- Fix docstring for request.host (`2591 <https://github.com/aio-libs/aiohttp/pull/2591>`_)
- Fix docstring for request.remote (`2592 <https://github.com/aio-libs/aiohttp/pull/2592>`_)



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- Correct `request.app` context (for handlers not just middlewares). (`2577 <https://github.com/aio-libs/aiohttp/pull/2577>`_)



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- Fix compatibility with `pytest` 3.3+ (`2565 <https://github.com/aio-libs/aiohttp/pull/2565>`_)



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- Make `request.app` point to proper application instance when using nested
applications (with middlewares). (`2550 <https://github.com/aio-libs/aiohttp/pull/2550>`_)
- Change base class of ClientConnectorSSLError to ClientSSLError from
ClientConnectorError. (`2563 <https://github.com/aio-libs/aiohttp/pull/2563>`_)
- Return client connection back to free pool on error in `connector.connect()`.
(`2567 <https://github.com/aio-libs/aiohttp/pull/2567>`_)



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- Having a `;` in Response content type does not assume it contains a charset
anymore. (`2197 <https://github.com/aio-libs/aiohttp/pull/2197>`_)
- Use `getattr(asyncio, 'async')` for keeping compatibility with Python 3.7.
(`2476 <https://github.com/aio-libs/aiohttp/pull/2476>`_)
- Ignore `NotImplementedError` raised by `set_child_watcher` from `uvloop`.
(`2491 <https://github.com/aio-libs/aiohttp/pull/2491>`_)
- Fix warning in `ClientSession.__del__` by stopping to try to close it.
(`2523 <https://github.com/aio-libs/aiohttp/pull/2523>`_)
- Fixed typo's in Third-party libraries page. And added async-v20 to the list
(`2510 <https://github.com/aio-libs/aiohttp/pull/2510>`_)



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