This is a Gio.ListStore with some extra functions for enabling,
disabling, rearranging, and reversing sort fields. It also has a
sort-string property for getting the current sort order to save
to the database.
Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>
The SortField object is used to represent a single column in the
Tracklist that the user could sort by.
Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>
