Log Message:
Changes 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 ``UnicodeDecodeError``s 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.