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* include=False on a Column should imply not generating the query filter and bulk field. If you want to not render a column but still want the filters, use the render_column=False feature
* Added callbacks for saving a form: `extra__pre_save_all_but_related_fields`, `extra__on_save_all_but_related_fields`, `extra__pre_save`
* Added `extra__new_instance` callback to `Form.create` for custom object creation
* The errors list has been changed. You should always use `add_error()` to add an error on a `Field` or a `Form`
* It is now possible to call `is_valid()` and `get_errors()` and get what you expect from `post_validation` on `Field` and `Form`
* Query forms can now have additional fields, that are ignored by the filter handling code (when you want to do additional filtering outside of the query logic)
* Bug fixes with state leaking between binds
* Fixed jump to code
* Improved error message for `is_valid_filter`
* Added a nice error message if you try to shoot in `style` or `class` as raw strings
* Fixed empty table message, and invalid query form messages