Mac OS X 10.9 and Python 3.3

Finally upgraded to Python 3.3.3. The ordinary maintenance release fixed the problem with the previous release.

The previously documented patch (http://slott-softwarearchitect.blogspot.com/2013/10/mac-os-x-109-mavericks-crashes-python.html) is no longer required.

Time to start incrementally installing all the various add-on components: docutils, PyYaml, Django, Jinja2, SQLAlchemy, etc.

Also, time to put more focus into rewriting various projects to finally cut the cord with Python2. At this point, there's no longer a reason to be looking backwards.