Passing `mimetype` to an HttpResponse object is deprecated
since Django 1.5 and will throw an error in Django 1.7.
`content_type` is supported since Django 1.0.
Fixed a problem with the detection of sortability of inline models at the template level that was preventing the drag-and-drop messaging in the template to be displayed.
Updated unit tests.
Updated version to 1.4.5.
Updated README with explanation of requirements for overriding queryset() on inline models.
Added extra models to sample project to demonstrate sortable models with custom querysets.
Improved JavaScript of sortables to be more efficient with better comparison checking.
Fixed highlighting of stacked inlines on sort finish.
Updated status to stable/production.
Added AttributeError exception handling for models that specify a SortableForeignKey that does not inherit from Sortable.
Added template support for nested objects that are sortable by a foreign key, where the foreign key is not sortable.
Refactored how the sortable_by properties get populated by looping over the model fields until we get to the SortableForeignKey, then grabbing properties from the field and its related data.
Refactored ORM calls to properly order objects by the sortable_by property to ensure objects are grouped correctly in the sortable change list template after being passed through dynamic_regroup.
Fixed missing import for jquery.effects.core, again.
Refactored sortable_by classmethod into a property.
Added backwards compatibility for pre 1.1.1 versions that still have sortable_by defined as a classmethod.
Need to address dynamic regroup template tag to see why categories are not being grouped properly in sample app.
Added highlighting to sorted inline.
Added migrations to add Note class to database.
Added SortableInlineBase for checking type of model specified in inline model subclasses Sortable.
