Update requests to 2.18.4

[pyup-bot]

There's a new version of requests available.
You are currently using 2.13.0. I have updated it to 2.18.4

These links might come in handy: PyPI | Changelog | Homepage

Changelog

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 neccessary 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.

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖