==================
Features
--------
- Add SSL related params to `ClientSession.request` (`1128 <https://github.com/aio-libs/aiohttp/pull/1128>`_)
- Make enable_compression work on HTTP/1.0 (`1828 <https://github.com/aio-libs/aiohttp/pull/1828>`_)
- Deprecate registering synchronous web handlers (`1993 <https://github.com/aio-libs/aiohttp/pull/1993>`_)
- Switch to `multidict 3.0`. All HTTP headers preserve casing now but compared
in case-insensitive way. (`1994 <https://github.com/aio-libs/aiohttp/pull/1994>`_)
- Improvement for `normalize_path_middleware`. Added possibility to handle URLs
with query string. (`1995 <https://github.com/aio-libs/aiohttp/pull/1995>`_)
- Use towncrier for CHANGES.txt build (`1997 <https://github.com/aio-libs/aiohttp/pull/1997>`_)
- Implement `trust_env=True` param in `ClientSession`. (`1998 <https://github.com/aio-libs/aiohttp/pull/1998>`_)
- Added variable to customize proxy headers (`2001 <https://github.com/aio-libs/aiohttp/pull/2001>`_)
- Implement `router.add_routes` and router decorators. (`2004 <https://github.com/aio-libs/aiohttp/pull/2004>`_)
- Deprecated `BaseRequest.has_body` in favor of
`BaseRequest.can_read_body` Added `BaseRequest.body_exists`
attribute that stays static for the lifetime of the request (`2005 <https://github.com/aio-libs/aiohttp/pull/2005>`_)
- Provide `BaseRequest.loop` attribute (`2024 <https://github.com/aio-libs/aiohttp/pull/2024>`_)
- Make `_CoroGuard` awaitable and fix `ClientSession.close` warning message
(`2026 <https://github.com/aio-libs/aiohttp/pull/2026>`_)
- Responses to redirects without Location header are returned instead of
raising a RuntimeError (`2030 <https://github.com/aio-libs/aiohttp/pull/2030>`_)
- Added `get_client`, `get_server`, `setUpAsync` and `tearDownAsync` methods to
AioHTTPTestCase (`2032 <https://github.com/aio-libs/aiohttp/pull/2032>`_)
- Add automatically a SafeChildWatcher to the test loop (`2058 <https://github.com/aio-libs/aiohttp/pull/2058>`_)
- add ability to disable automatic response decompression (`2110 <https://github.com/aio-libs/aiohttp/pull/2110>`_)
- Add support for throttling DNS request, avoiding the requests saturation when
there is a miss in the DNS cache and many requests getting into the connector
at the same time. (`2111 <https://github.com/aio-libs/aiohttp/pull/2111>`_)
- Use request for getting access log information instead of message/transport
pair. Add `RequestBase.remote` property for accessing to IP of client
initiated HTTP request. (`2123 <https://github.com/aio-libs/aiohttp/pull/2123>`_)
- json() raises a ContentTypeError exception if the content-type does not meet
the requirements instead of raising a generic ClientResponseError. (`2136 <https://github.com/aio-libs/aiohttp/pull/2136>`_)
- Make the HTTP client able to return HTTP chunks when chunked transfer
encoding is used. (`2150 <https://github.com/aio-libs/aiohttp/pull/2150>`_)
- add `append_version` arg into `StaticResource.url` and
`StaticResource.url_for` methods for getting an url with hash (version) of
the file. (`2157 <https://github.com/aio-libs/aiohttp/pull/2157>`_)
- Fix parsing the Forwarded header. * commas and semicolons are allowed inside
quoted-strings; * empty forwarded-pairs (as in for=_1;;by=_2) are allowed; *
non-standard parameters are allowed (although this alone could be easily done
in the previous parser). (`2173 <https://github.com/aio-libs/aiohttp/pull/2173>`_)
- Don't require ssl module to run. aiohttp does not require SSL to function.
The code paths involved with SSL will only be hit upon SSL usage. Raise
`RuntimeError` if HTTPS protocol is required but ssl module is not present.
(`2221 <https://github.com/aio-libs/aiohttp/pull/2221>`_)
- Accept coroutine fixtures in pytest plugin (`2223 <https://github.com/aio-libs/aiohttp/pull/2223>`_)
- Call `shutdown_asyncgens` before event loop closing on Python 3.6. (`2227 <https://github.com/aio-libs/aiohttp/pull/2227>`_)
- Speed up Signals when there are no receivers (`2229 <https://github.com/aio-libs/aiohttp/pull/2229>`_)
- Raise `InvalidURL` instead of `ValueError` on fetches with invalid URL.
(`2241 <https://github.com/aio-libs/aiohttp/pull/2241>`_)
- Move `DummyCookieJar` into `cookiejar.py` (`2242 <https://github.com/aio-libs/aiohttp/pull/2242>`_)
- `run_app`: Make `print=None` disable printing (`2260 <https://github.com/aio-libs/aiohttp/pull/2260>`_)
- Support `brotli` encoding (generic-purpose lossless compression algorithm)
(`2270 <https://github.com/aio-libs/aiohttp/pull/2270>`_)
- Add server support for WebSockets Per-Message Deflate. Add client option to
add deflate compress header in WebSockets request header. If calling
ClientSession.ws_connect() with `compress=15` the client will support deflate
compress negotiation. (`2273 <https://github.com/aio-libs/aiohttp/pull/2273>`_)
- Support `verify_ssl`, `fingerprint`, `ssl_context` and `proxy_headers` by
`client.ws_connect`. (`2292 <https://github.com/aio-libs/aiohttp/pull/2292>`_)
- Added `aiohttp.ClientConnectorSSLError` when connection fails due
`ssl.SSLError` (`2294 <https://github.com/aio-libs/aiohttp/pull/2294>`_)
- `aiohttp.web.Application.make_handler` support `access_log_class` (`2315 <https://github.com/aio-libs/aiohttp/pull/2315>`_)
- Build HTTP parser extension in non-strict mode by default. (`2332 <https://github.com/aio-libs/aiohttp/pull/2332>`_)
Bugfixes
--------
- Clear auth information on redirecting to other domain (`1699 <https://github.com/aio-libs/aiohttp/pull/1699>`_)
- Fix missing app.loop on startup hooks during tests (`2060 <https://github.com/aio-libs/aiohttp/pull/2060>`_)
- Fix issue with synchronous session closing when using `ClientSession` as an
asynchronous context manager. (`2063 <https://github.com/aio-libs/aiohttp/pull/2063>`_)
- Fix issue with `CookieJar` incorrectly expiring cookies in some edge cases.
(`2084 <https://github.com/aio-libs/aiohttp/pull/2084>`_)
- Force use of IPv4 during test, this will make tests run in a Docker container
(`2104 <https://github.com/aio-libs/aiohttp/pull/2104>`_)
- Warnings about unawaited coroutines now correctly point to the user's code.
(`2106 <https://github.com/aio-libs/aiohttp/pull/2106>`_)
- Fix issue with `IndexError` being raised by the `StreamReader.iter_chunks()`
generator. (`2112 <https://github.com/aio-libs/aiohttp/pull/2112>`_)
- Support HTTP 308 Permanent redirect in client class. (`2114 <https://github.com/aio-libs/aiohttp/pull/2114>`_)
- Fix `FileResponse` sending empty chunked body on 304. (`2143 <https://github.com/aio-libs/aiohttp/pull/2143>`_)
- Do not add `Content-Length: 0` to GET/HEAD/TRACE/OPTIONS requests by default.
(`2167 <https://github.com/aio-libs/aiohttp/pull/2167>`_)
- Fix parsing the Forwarded header according to RFC 7239. (`2170 <https://github.com/aio-libs/aiohttp/pull/2170>`_)
- Securely determining remote/scheme/host 2171 (`2171 <https://github.com/aio-libs/aiohttp/pull/2171>`_)
- Fix header name parsing, if name is split into multiple lines (`2183 <https://github.com/aio-libs/aiohttp/pull/2183>`_)
- Handle session close during connection, `KeyError:
<aiohttp.connector._TransportPlaceholder>` (`2193 <https://github.com/aio-libs/aiohttp/pull/2193>`_)
- Fixes uncaught `TypeError` in `helpers.guess_filename` if `name` is not a
string (`2201 <https://github.com/aio-libs/aiohttp/pull/2201>`_)
- Raise OSError on async DNS lookup if resolved domain is an alias for another
one, which does not have an A or CNAME record. (`2231 <https://github.com/aio-libs/aiohttp/pull/2231>`_)
- Fix incorrect warning in `StreamReader`. (`2251 <https://github.com/aio-libs/aiohttp/pull/2251>`_)
- Properly clone state of web request (`2284 <https://github.com/aio-libs/aiohttp/pull/2284>`_)
- Fix C HTTP parser for cases when status line is split into different TCP
packets. (`2311 <https://github.com/aio-libs/aiohttp/pull/2311>`_)
- Fix `web.FileResponse` overriding user supplied Content-Type (`2317 <https://github.com/aio-libs/aiohttp/pull/2317>`_)
Improved Documentation
----------------------
- Add a note about possible performance degradation in `await resp.text()` if
charset was not provided by `Content-Type` HTTP header. Pass explicit
encoding to solve it. (`1811 <https://github.com/aio-libs/aiohttp/pull/1811>`_)
- Drop `disqus` widget from documentation pages. (`2018 <https://github.com/aio-libs/aiohttp/pull/2018>`_)
- Add a graceful shutdown section to the client usage documentation. (`2039 <https://github.com/aio-libs/aiohttp/pull/2039>`_)
- Document `connector_owner` parameter. (`2072 <https://github.com/aio-libs/aiohttp/pull/2072>`_)
- Update the doc of web.Application (`2081 <https://github.com/aio-libs/aiohttp/pull/2081>`_)
- Fix mistake about access log disabling. (`2085 <https://github.com/aio-libs/aiohttp/pull/2085>`_)
- Add example usage of on_startup and on_shutdown signals by creating and
disposing an aiopg connection engine. (`2131 <https://github.com/aio-libs/aiohttp/pull/2131>`_)
- Document `encoded=True` for `yarl.URL`, it disables all yarl transformations.
(`2198 <https://github.com/aio-libs/aiohttp/pull/2198>`_)
- Document that all app's middleware factories are run for every request.
(`2225 <https://github.com/aio-libs/aiohttp/pull/2225>`_)
- Reflect the fact that default resolver is threaded one starting from aiohttp
1.1 (`2228 <https://github.com/aio-libs/aiohttp/pull/2228>`_)
Deprecations and Removals
-------------------------
- Drop deprecated `Server.finish_connections` (`2006 <https://github.com/aio-libs/aiohttp/pull/2006>`_)
- Drop %O format from logging, use %b instead. Drop %e format from logging,
environment variables are not supported anymore. (`2123 <https://github.com/aio-libs/aiohttp/pull/2123>`_)
- Drop deprecated secure_proxy_ssl_header support (`2171 <https://github.com/aio-libs/aiohttp/pull/2171>`_)
- Removed TimeService in favor of simple caching. TimeService also had a bug
where it lost about 0.5 seconds per second. (`2176 <https://github.com/aio-libs/aiohttp/pull/2176>`_)
- Drop unused response_factory from static files API (`2290 <https://github.com/aio-libs/aiohttp/pull/2290>`_)
Misc
----
- 2013, 2014, 2048, 2094, 2149, 2187, 2214, 2225, 2243, 2248