Update requests to 2.19.0

[pyup-bot]

This PR updates requests from 2.9.1 to 2.19.0.

Changelog

2.19.0

++++++++++++++++++

**Improvements**

- Warn user about possible slowdown when using cryptography version < 1.3.4
- Check for invalid host in proxy URL, before forwarding request to adapter.
- Fragments are now properly maintained across redirects. (RFC7231 7.1.2)
- Removed use of cgi module to expedite library load time.
- Added support for SHA-256 and SHA-512 digest auth algorithms.
- Minor performance improvement to ``Request.content``.
- Migrate to using collections.abc for 3.7 compatibility.

**Bugfixes**

- Parsing empty ``Link`` headers with ``parse_header_links()`` no longer return one bogus entry.
- Fixed issue where loading the default certificate bundle from a zip archive
would raise an ``IOError``.
- Fixed issue with unexpected ``ImportError`` on windows system which do not support ``winreg`` module.
- DNS resolution in proxy bypass no longer includes the username and password in
the request. This also fixes the issue of DNS queries failing on macOS.
- Properly normalize adapter prefixes for url comparison.
- Passing ``None`` as a file pointer to the ``files`` param no longer raises an exception.
- Calling ``copy`` on a ``RequestsCookieJar`` will now preserve the cookie policy correctly.

**Dependencies**

- We now support idna v2.7.
- We now support urllib3 v1.23.

2.18.4

+++++++++++++++++++

**Improvements**

- Error messages for invalid headers now include the header name for easier debugging

**Dependencies**

- We now support idna v2.6.

2.18.3

+++++++++++++++++++

**Improvements**

- Running ``$ python -m requests.help`` now includes the installed version of idna.

**Bugfixes**

- Fixed issue where Requests would raise ``ConnectionError`` instead of
``SSLError`` when encountering SSL problems when using urllib3 v1.22.

2.18.2

+++++++++++++++++++

**Bugfixes**

- ``requests.help`` no longer fails on Python 2.6 due to the absence of
``ssl.OPENSSL_VERSION_NUMBER``.

**Dependencies**

- We now support urllib3 v1.22.

2.18.1

+++++++++++++++++++

**Bugfixes**

- Fix an error in the packaging whereby the ``*.whl`` contained incorrect data
that regressed the fix in v2.17.3.

2.18.0

+++++++++++++++++++

**Improvements**

- ``Response`` is now a context manager, so can be used directly in a ``with`` statement
without first having to be wrapped by ``contextlib.closing()``.

**Bugfixes**

- Resolve installation failure if multiprocessing is not available
- Resolve tests crash if multiprocessing is not able to determine the number of CPU cores
- Resolve error swallowing in utils set_environ generator

2.17.3

+++++++++++++++++++

**Improvements**

- Improved ``packages`` namespace identity support, for monkeypatching libraries.

2.17.2

+++++++++++++++++++

**Improvements**

- Improved ``packages`` namespace identity support, for monkeypatching libraries.

2.17.1

+++++++++++++++++++

**Improvements**

- Improved ``packages`` namespace identity support, for monkeypatching libraries.

2.17.0

+++++++++++++++++++

**Improvements**

- Removal of the 301 redirect cache. This improves thread-safety.

2.16.5

+++++++++++++++++++

- Improvements to ``$ python -m requests.help``.

2.16.4

+++++++++++++++++++

- Introduction of the ``$ python -m requests.help`` command, for debugging with maintainers!

2.16.3

+++++++++++++++++++

- Further restored the ``requests.packages`` namespace for compatibility reasons.

2.16.2

+++++++++++++++++++

- Further restored the ``requests.packages`` namespace for compatibility reasons.

No code modification (noted below) should be necessary any longer.

2.16.1

+++++++++++++++++++

- Restored the ``requests.packages`` namespace for compatibility reasons.
- Bugfix for ``urllib3`` version parsing.

**Note**: code that was written to import against the ``requests.packages``
namespace previously will have to import code that rests at this module-level
now.

For example::

 from requests.packages.urllib3.poolmanager import PoolManager

Will need to be re-written to be::

 from requests.packages import urllib3
 urllib3.poolmanager.PoolManager

Or, even better::

 from urllib3.poolmanager import PoolManager

2.16.0

+++++++++++++++++++

- Unvendor ALL the things!

2.15.1

+++++++++++++++++++

- Everyone makes mistakes.

2.15.0

+++++++++++++++++++

**Improvements**

- Introduction of the ``Response.next`` property, for getting the next
``PreparedResponse`` from a redirect chain (when ``allow_redirects=False``).
- Internal refactoring of ``__version__`` module.

**Bugfixes**

- Restored once-optional parameter for ``requests.utils.get_environ_proxies()``.

2.14.2

+++++++++++++++++++

**Bugfixes**

- Changed a less-than to an equal-to and an or in the dependency markers to
widen compatibility with older setuptools releases.

2.14.1

+++++++++++++++++++

**Bugfixes**

- Changed the dependency markers to widen compatibility with older pip
releases.

2.14.0

+++++++++++++++++++

**Improvements**

- It is now possible to pass ``no_proxy`` as a key to the ``proxies``
dictionary to provide handling similar to the ``NO_PROXY`` environment
variable.
- When users provide invalid paths to certificate bundle files or directories
Requests now raises ``IOError``, rather than failing at the time of the HTTPS
request with a fairly inscrutable certificate validation error.
- The behavior of ``SessionRedirectMixin`` was slightly altered.
``resolve_redirects`` will now detect a redirect by calling
``get_redirect_target(response)`` instead of directly
querying ``Response.is_redirect`` and ``Response.headers['location']``.
Advanced users will be able to process malformed redirects more easily.
- Changed the internal calculation of elapsed request time to have higher
resolution on Windows.
- Added ``win_inet_pton`` as conditional dependency for the ``[socks]`` extra
on Windows with Python 2.7.
- Changed the proxy bypass implementation on Windows: the proxy bypass
check doesn't use forward and reverse DNS requests anymore
- URLs with schemes that begin with ``http`` but are not ``http`` or ``https``
no longer have their host parts forced to lowercase.

**Bugfixes**

- Much improved handling of non-ASCII ``Location`` header values in redirects.
Fewer ``UnicodeDecodeErrors`` are encountered on Python 2, and Python 3 now
correctly understands that Latin-1 is unlikely to be the correct encoding.
- If an attempt to ``seek`` file to find out its length fails, we now
appropriately handle that by aborting our content-length calculations.
- Restricted ``HTTPDigestAuth`` to only respond to auth challenges made on 4XX
responses, rather than to all auth challenges.
- Fixed some code that was firing ``DeprecationWarning`` on Python 3.6.
- The dismayed person emoticon (``/o\\``) no longer has a big head. I'm sure
this is what you were all worrying about most.


**Miscellaneous**

- Updated bundled urllib3 to v1.21.1.
- Updated bundled chardet to v3.0.2.
- Updated bundled idna to v2.5.
- Updated bundled certifi to 2017.4.17.

2.13.0

+++++++++++++++++++

**Features**

- Only load the ``idna`` library when we've determined we need it. This will
save some memory for users.

**Miscellaneous**

- Updated bundled urllib3 to 1.20.
- Updated bundled idna to 2.2.

2.12.5

+++++++++++++++++++

**Bugfixes**

- Fixed an issue with JSON encoding detection, specifically detecting
big-endian UTF-32 with BOM.

2.12.4

+++++++++++++++++++

**Bugfixes**

- Fixed regression from 2.12.2 where non-string types were rejected in the
basic auth parameters. While support for this behaviour has been readded,
the behaviour is deprecated and will be removed in the future.

2.12.3

+++++++++++++++++++

**Bugfixes**

- Fixed regression from v2.12.1 for URLs with schemes that begin with "http".
These URLs have historically been processed as though they were HTTP-schemed
URLs, and so have had parameters added. This was removed in v2.12.2 in an
overzealous attempt to resolve problems with IDNA-encoding those URLs. This
change was reverted: the other fixes for IDNA-encoding have been judged to
be sufficient to return to the behaviour Requests had before v2.12.0.

2.12.2

+++++++++++++++++++

**Bugfixes**

- Fixed several issues with IDNA-encoding URLs that are technically invalid but
which are widely accepted. Requests will now attempt to IDNA-encode a URL if
it can but, if it fails, and the host contains only ASCII characters, it will
be passed through optimistically. This will allow users to opt-in to using
IDNA2003 themselves if they want to, and will also allow technically invalid
but still common hostnames.
- Fixed an issue where URLs with leading whitespace would raise
``InvalidSchema`` errors.
- Fixed an issue where some URLs without the HTTP or HTTPS schemes would still
have HTTP URL preparation applied to them.
- Fixed an issue where Unicode strings could not be used in basic auth.
- Fixed an issue encountered by some Requests plugins where constructing a
Response object would cause ``Response.content`` to raise an
``AttributeError``.

2.12.1

+++++++++++++++++++

**Bugfixes**

- Updated setuptools 'security' extra for the new PyOpenSSL backend in urllib3.

**Miscellaneous**

- Updated bundled urllib3 to 1.19.1.

2.12.0

+++++++++++++++++++

**Improvements**

- Updated support for internationalized domain names from IDNA2003 to IDNA2008.
This updated support is required for several forms of IDNs and is mandatory
for .de domains.
- Much improved heuristics for guessing content lengths: Requests will no
longer read an entire ``StringIO`` into memory.
- Much improved logic for recalculating ``Content-Length`` headers for
``PreparedRequest`` objects.
- Improved tolerance for file-like objects that have no ``tell`` method but
do have a ``seek`` method.
- Anything that is a subclass of ``Mapping`` is now treated like a dictionary
by the ``data=`` keyword argument.
- Requests now tolerates empty passwords in proxy credentials, rather than
stripping the credentials.
- If a request is made with a file-like object as the body and that request is
redirected with a 307 or 308 status code, Requests will now attempt to
rewind the body object so it can be replayed.

**Bugfixes**

- When calling ``response.close``, the call to ``close`` will be propagated
through to non-urllib3 backends.
- Fixed issue where the ``ALL_PROXY`` environment variable would be preferred
over scheme-specific variables like ``HTTP_PROXY``.
- Fixed issue where non-UTF8 reason phrases got severely mangled by falling
back to decoding using ISO 8859-1 instead.
- Fixed a bug where Requests would not correctly correlate cookies set when
using custom Host headers if those Host headers did not use the native
string type for the platform.

**Miscellaneous**

- Updated bundled urllib3 to 1.19.
- Updated bundled certifi certs to 2016.09.26.

2.11.1

+++++++++++++++++++

**Bugfixes**

- Fixed a bug when using ``iter_content`` with ``decode_unicode=True`` for
streamed bodies would raise ``AttributeError``. This bug was introduced in
2.11.
- Strip Content-Type and Transfer-Encoding headers from the header block when
following a redirect that transforms the verb from POST/PUT to GET.

2.11.0

+++++++++++++++++++

**Improvements**

- Added support for the ``ALL_PROXY`` environment variable.
- Reject header values that contain leading whitespace or newline characters to
reduce risk of header smuggling.

**Bugfixes**

- Fixed occasional ``TypeError`` when attempting to decode a JSON response that
occurred in an error case. Now correctly returns a ``ValueError``.
- Requests would incorrectly ignore a non-CIDR IP address in the ``NO_PROXY``
environment variables: Requests now treats it as a specific IP.
- Fixed a bug when sending JSON data that could cause us to encounter obscure
OpenSSL errors in certain network conditions (yes, really).
- Added type checks to ensure that ``iter_content`` only accepts integers and
``None`` for chunk sizes.
- Fixed issue where responses whose body had not been fully consumed would have
the underlying connection closed but not returned to the connection pool,
which could cause Requests to hang in situations where the ``HTTPAdapter``
had been configured to use a blocking connection pool.

**Miscellaneous**

- Updated bundled urllib3 to 1.16.
- Some previous releases accidentally accepted non-strings as acceptable header values. This release does not.

2.10.0

+++++++++++++++++++

**New Features**

- SOCKS Proxy Support! (requires PySocks; ``$ pip install requests[socks]``)

**Miscellaneous**

- Updated bundled urllib3 to 1.15.1.

2.9.2

++++++++++++++++++

**Improvements**

- Change built-in CaseInsensitiveDict (used for headers) to use OrderedDict
as its underlying datastore.

**Bugfixes**

- Don't use redirect_cache if allow_redirects=False
- When passed objects that throw exceptions from ``tell()``, send them via
chunked transfer encoding instead of failing.
- Raise a ProxyError for proxy related connection issues.

Links

• PyPI: https://pypi.org/project/requests
• Changelog: https://pyup.io/changelogs/requests/
• Homepage: http://python-requests.org

[pyup-bot]

Closing this in favor of #109