- update to 3.1.0:
- Relax JSON content-type checking in the ``ClientResponse.json()`` to allow
"application/xxx+json" instead of strict "application/json". (#2206)
- Bump C HTTP parser to version 2.8 (#2730)
- Accept a coroutine as an application factory in ``web.run_app`` and gunicorn
worker. (#2739)
- Implement application cleanup context (``app.cleanup_ctx`` property). (#2747)
- Make ``writer.write_headers`` a coroutine. (#2762)
- Add tracking signals for getting request/response bodies. (#2767)
- Deprecate ClientResponseError.code in favor of .status to keep similarity
with response classes. (#2781)
- Implement ``app.add_routes()`` method. (#2787)
- Implement ``web.static()`` and ``RouteTableDef.static()`` API. (#2795)
- Install a test event loop as default by ``asyncio.set_event_loop()``. The
change affects aiohttp test utils but backward compatibility is not broken
for 99.99% of use cases. (#2804)
- Refactor ``ClientResponse`` constructor: make logically required constructor
arguments mandatory, drop ``_post_init()`` method. (#2820)
- Use ``app.add_routes()`` in server docs everywhere (#2830)
- Websockets refactoring, all websocket writer methods are converted into
coroutines. (#2836)
- Provide ``Content-Range`` header for ``Range`` requests (#2844)
- Fix websocket client return EofStream. (#2784)
- Fix websocket demo. (#2789)
- Property ``BaseRequest.http_range`` now returns a python-like slice when
requesting the tail of the range. It's now indicated by a negative value in
``range.start`` rather then in ``range.stop`` (#2805)
- Close a connection if an unexpected exception occurs while sending a request
- Fix firing DNS tracing events. (#2841)
- Change ``ClientResponse.json()`` documentation to reflect that it now