Links for PyYAML

The Windows installer executables are the pre-built ones with
LibYAML bindings.

The wheels are built by me without LibYAML buildings (pure Python).
The wheels are built:

  - Comment out the "ext_modules" parameter in setup.py
  - Add the Python 3.3 and Python 3.4 versions to classifiers in setup.py

  - python2 setup.py bdist_wheel --python-tag=py2
  - python3 setup.py bdist_wheel --python-tag=py3


.. note:: Versions 3.09 and 3.10 are **not** verified.