This is the last :doc:aiohttp <index> release tested under
Python 3.6. The 3.9 stream is dropping it from the CI and the
distribution package metadata.
Bugfixes
Increased the upper boundary of the :doc:multidict:index dependency
to allow for the version 6 -- by :user:hugovk.
It used to be limited below version 7 in :doc:aiohttp <index> v3.8.1 but
was lowered in v3.8.2 via 6550 and never brought back, causing
problems with dependency pins when upgrading. :doc:aiohttp <index> v3.8.3
fixes that by recovering the original boundary of < 7.
#​6950 <https://github.com/aio-libs/aiohttp/issues/6950>_
Support registering OPTIONS HTTP method handlers via RouteTableDef.
#​4663 <https://github.com/aio-libs/aiohttp/issues/4663>_
Started supporting authority-form and absolute-form URLs on the server-side.
#​6227 <https://github.com/aio-libs/aiohttp/issues/6227>_
Fix Python 3.11 alpha incompatibilities by using Cython 0.29.25
#​6396 <https://github.com/aio-libs/aiohttp/issues/6396>_
Remove a deprecated usage of pytest.warns(None)
#​6663 <https://github.com/aio-libs/aiohttp/issues/6663>_
Fix regression where asyncio.CancelledError occurs on client disconnection.
#​6719 <https://github.com/aio-libs/aiohttp/issues/6719>_
Export :py:class:~aiohttp.web.PrefixedSubAppResource under
:py:mod:aiohttp.web -- by :user:Dreamsorcerer.
This fixes a regression introduced by 3469.
#​6889 <https://github.com/aio-libs/aiohttp/issues/6889>_
Dropped the :class:object type possibility from
the :py:attr:aiohttp.ClientSession.timeout
property return type declaration.
#​6917 <https://github.com/aio-libs/aiohttp/issues/6917>*,
#​6923 <https://github.com/aio-libs/aiohttp/issues/6923>*
Improved Documentation
Added clarification on configuring the app object with settings such as a db connection.
#​4137 <https://github.com/aio-libs/aiohttp/issues/4137>_
Edited the web.run_app declaration.
#​6401 <https://github.com/aio-libs/aiohttp/issues/6401>_
Dropped the :class:object type possibility from
the :py:attr:aiohttp.ClientSession.timeout
property return type declaration.
#​6917 <https://github.com/aio-libs/aiohttp/issues/6917>*,
#​6923 <https://github.com/aio-libs/aiohttp/issues/6923>*
Deprecations and Removals
Drop Python 3.5 support, aiohttp works on 3.6+ now.
#​4046 <https://github.com/aio-libs/aiohttp/issues/4046>_
