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- Ensure relationship mapped schemas have a ``name``. This ensures
correct usage with ``Deform``.
- Ensure missing schema node information correctly maps to SQLAlchemy
structures.
- Map missing information for "required" relationships based upon the
join condition. This can be further customised by given relationships
setting ``missing=colander.required`` within their respective
configurations.
- Read Colander node init settings for a mapped class using the
``__colanderalchemy__`` attribute. This allows for full customisation
of the resulting ``colander.Mapping`` SchemaNode.
- Allow non-SQLAlchemy schema nodes within ``SQLAlchemySchemaNode``.
Previously, the ``dictify`` method would throw an ``AttributeError``.
- Fix setup.py for python 3k