Log message:
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.

Log message:
Fix previous: allow newer versions of some dependencies.

Log message:
Loosen requires (needed for mail/notmuch).

Log message:
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

Log message:
2.17.2 (2017-05-29)
**Improvements**
- Improved ``packages`` namespace identity support, for monkeypatching libraries.

Log message:
Comment out py-test-httpbin build dependency, it depends on py-requests
via py-flask and py-werkzeug.

Log message:
2.16.5 (2017-05-28)
- Improvements to ``$ python -m requests.help``.

Log message:
Changes 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.

Log message:
Changes 2.14.1:
**Bugfixes**
- Changed the dependency markers to widen compatibility with older pip
releases.

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.