Added sortable model that will not be registered as an inline, but will have a non-sortable parent.
Added utility function to check if a model defined as a sortable foreign key inherits from Sortable and if there are more than one objects for that model.
Updated comments to be clearer.
Minor formatting changes.
Cahnged check for sortable_by_class_is_sortable to use new check_model_is_sortable, rather than only relying on the number of objects.
Added a space after the legacy sortable_by parameter to separate it.
Added new model class to demonstrate a sortable model with a foreign key that is not sortable that is not defined as an inline.
Wired up SortableNonInlineCategory model to admin.
Deleted initial data fixture.
Added new model and data.
Removed unused objects.
Added Person create statements and removed call to fixture data to prevent migration problems across Django versions.
Changes to data from manual testing.
Version bump to 1.7.6.
Updated readme.