Update aiohttp to 3.4.0

[pyup-bot]

This PR updates aiohttp from 3.3.2 to 3.4.0.

Changelog

3.4.0

==================

Features
--------

- Add type hints (`3049 <https://github.com/aio-libs/aiohttp/pull/3049>`_)
- Add ``raise_for_status`` request parameter (`3073 <https://github.com/aio-libs/aiohttp/pull/3073>`_)
- Add type hints to HTTP client (`3092 <https://github.com/aio-libs/aiohttp/pull/3092>`_)
- Minor server optimizations (`3095 <https://github.com/aio-libs/aiohttp/pull/3095>`_)
- Preserve the cause when `HTTPException` is raised from another exception. (`3096 <https://github.com/aio-libs/aiohttp/pull/3096>`_)
- Add `close_boundary` option in `MultipartWriter.write` method. Support streaming (`3104 <https://github.com/aio-libs/aiohttp/pull/3104>`_)
- Added a ``remove_slash`` option to the ``normalize_path_middleware`` factory. (`3173 <https://github.com/aio-libs/aiohttp/pull/3173>`_)
- The class `AbstractRouteDef` is importable from `aiohttp.web`. (`3183 <https://github.com/aio-libs/aiohttp/pull/3183>`_)


Bugfixes
--------

- Prevent double closing when client connection is released before the
last ``data_received()`` callback. (`3031 <https://github.com/aio-libs/aiohttp/pull/3031>`_)
- Make redirect with `normalize_path_middleware` work when using url encoded paths. (`3051 <https://github.com/aio-libs/aiohttp/pull/3051>`_)
- Postpone web task creation to connection establishment. (`3052 <https://github.com/aio-libs/aiohttp/pull/3052>`_)
- Fix ``sock_read`` timeout. (`3053 <https://github.com/aio-libs/aiohttp/pull/3053>`_)
- When using a server-request body as the `data=` argument of a client request, iterate over the content with `readany` instead of `readline` to avoid `Line too long` errors. (`3054 <https://github.com/aio-libs/aiohttp/pull/3054>`_)
- fix `UrlDispatcher` has no attribute `add_options`, add `web.options` (`3062 <https://github.com/aio-libs/aiohttp/pull/3062>`_)
- correct filename in content-disposition with multipart body (`3064 <https://github.com/aio-libs/aiohttp/pull/3064>`_)
- Many HTTP proxies has buggy keepalive support.
Let's not reuse connection but close it after processing every response. (`3070 <https://github.com/aio-libs/aiohttp/pull/3070>`_)
- raise 413 "Payload Too Large" rather than raising ValueError in request.post()
Add helpful debug message to 413 responses (`3087 <https://github.com/aio-libs/aiohttp/pull/3087>`_)
- Fix `StreamResponse` equality, now that they are `MutableMapping` objects. (`3100 <https://github.com/aio-libs/aiohttp/pull/3100>`_)
- Fix server request objects comparison (`3116 <https://github.com/aio-libs/aiohttp/pull/3116>`_)
- Do not hang on `206 Partial Content` response with `Content-Encoding: gzip` (`3123 <https://github.com/aio-libs/aiohttp/pull/3123>`_)
- Fix timeout precondition checkers (`3145 <https://github.com/aio-libs/aiohttp/pull/3145>`_)


Improved Documentation
----------------------

- Add a new FAQ entry that clarifies that you should not reuse response
objects in middleware functions. (`3020 <https://github.com/aio-libs/aiohttp/pull/3020>`_)
- Add FAQ section "Why is creating a ClientSession outside of an event loop dangerous?" (`3072 <https://github.com/aio-libs/aiohttp/pull/3072>`_)
- Fix link to Rambler (`3115 <https://github.com/aio-libs/aiohttp/pull/3115>`_)
- Fix TCPSite documentation on the Server Reference page. (`3146 <https://github.com/aio-libs/aiohttp/pull/3146>`_)
- Fix documentation build configuration file for Windows. (`3147 <https://github.com/aio-libs/aiohttp/pull/3147>`_)
- Remove no longer existing lingering_timeout parameter of Application.make_handler from documentation. (`3151 <https://github.com/aio-libs/aiohttp/pull/3151>`_)
- Mention that ``app.make_handler`` is deprecated, recommend to use runners
API instead. (`3157 <https://github.com/aio-libs/aiohttp/pull/3157>`_)


Deprecations and Removals
-------------------------

- Drop ``loop.current_task()`` from ``helpers.current_task()`` (`2826 <https://github.com/aio-libs/aiohttp/pull/2826>`_)
- Drop ``reader`` parameter from ``request.multipart()``. (`3090 <https://github.com/aio-libs/aiohttp/pull/3090>`_)

Links

• PyPI: https://pypi.org/project/aiohttp
• Changelog: https://pyup.io/changelogs/aiohttp/
• Repo: https://github.com/aio-libs/aiohttp

Resolves #301