The 80-column thing isn't fixed yet, but I redid the patch:

- removed AutoNameEnum since there was some question of casing, etc
- redid the methodology of auto-generating values:
    instead of adding it all to the prepared namespace or the metaclass, I
    now look for a special method in the Enum class, and if present use
    that
- removed settings (no AutoNumber, AutoName, nor Unique)
- redid AutoEnum to use the _generate_next_value_ technique
- updated docs

Let me know what you think!