Fix setup.py
Fix indendation wholesale
Fix imports
Fix cluster.py docstring tags
Change all docstring quotes from single to double
Fix docstring tags
Change namedtuples to classes where it makes sense
Fix cruft in vcs.py
Fix cruft in output.py
Fix cruft (and bugs) in approx.py
Fix cruft in stats.py
Fix cruft in __main__.py
Don't lie about alleged Python 2.6 support