Sorts list of dicts by key.

 sort_dict(+Key, +Direction, +List, -Sorted) is det

Sorts the list of dicts in the given direction. Direction is either asc or desc. Sorting is done by predsort/3. Throws error(invalid_direction(Direction)) when the Direction is neither asc or desc.

 sort_dict(+Key, +List, -Sorted) is det

Does same as sort_dict/4 but uses asc as the default sorting direction.