Move an item, specified by handle, into position in a sorted list. Uses
the item comparator, if any, to determine the new location. If low_value
is true, starts searching from the start of the list, otherwise searches
from the end.

def reorder(self, handle, low_value):
        """
        Move an item, specified by handle, into position in a sorted list. Uses
the item comparator, if any, to determine the new location. If low_value
is true, starts searching from the start of the list, otherwise searches
from the end.
        """
        return lib.zlistx_reorder(self._as_parameter_, handle, low_value)