Log Message:
v33.1.1
-------
* 921: Correct issue where certifi fallback not being
  reached on Windows.

v33.1.0
-------
Installation via pip, as indicated in the `Python Packaging
User's Guide <https://packaging.python.org/installing/>`_,
is the officially-supported mechanism for installing
Setuptools, and this recommendation is now explicit in the
much more concise README.

Other edits and tweaks were made to the documentation. The
codebase is unchanged.

v33.0.0
-------
* 619: Removed support for the ``tag_svn_revision``
  distribution option. If Subversion tagging support is
  still desired, consider adding the functionality to
  setuptools_svn in setuptools_svn 2.