Update daphne to 3.0.1

[pyup-bot]

This PR updates daphne from 2.3.0 to 3.0.1.

Changelog

3.0.1

------------------

* Fixed a bug where ``asyncio.CancelledError`` was not correctly handled on
Python 3.8+, resulting in incorrect protocol application cleanup.

3.0.0

------------------

* Updates internals to use ASGI v3 throughout. ``asgiref.compatibility`` is
used for older applications.

* Consequently, the `--asgi-protocol` command-line option is removed.

* HTTP request bodies are now read, and passed to the application, in chunks.

* Added support for Python 3.9.

* Dropped support for Python 3.5.

2.5.0

------------------

* Fixes compatability for twisted when running Python 3.8+ on Windows, by
setting ``asyncio.WindowsSelectorEventLoopPolicy`` as the event loop policy
in this case.

* The internal ``daphne.testing.TestApplication`` now requires an addition
``lock`` argument to ``__init__()``. This is expected to be an instance of
``multiprocessing.Lock``.

2.4.1

------------------

* Avoids Twisted using the default event loop, for compatibility with Django
3.0's ``async_unsafe()`` decorator in threaded contexts, such as using the
auto-reloader.

2.4.0

------------------

* Adds CI testing against and support for Python 3.8.

* Adds support for ``raw_path`` in ASGI scope.

* Ensures an error response is sent to the client if the application sends
malformed headers.

* Resolves an asyncio + multiprocessing problem when testing that would cause
the test suite to fail/hang on macOS.

* Requires installing Twisted's TLS extras, via ``install_requires``.

* Adds missing LICENSE to distribution.

Links

• PyPI: https://pypi.org/project/daphne
• Changelog: https://pyup.io/changelogs/daphne/
• Repo: https://github.com/django/daphne

[pyup-bot]

Closing this in favor of #668