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Backwards-incompatible
^^^^^^^^^^^^^^^^^^^^^^
* Moved the `Model.to_dict` functionality to `dict(model)`.
* The `Model.validation_errors` method now is an interable of field name and validaton error pairs.
* Removed the `Field` subfix for all Booby fields. Now use the module as namespace: `fields.String`.
Highlights
^^^^^^^^^^
* Added an `is_valid` property to `Model`.
* The `Model` instances now are iterables of field name, value pairs.