Class GeographicLib::AuxAngle: The functionality offer by this class is also provided by the more general class Angle. It is recommended to use Angle for new applications.
Class GeographicLib::DST: The functionality offered by this class is also provided by the more general class Trigfun. It is recommended to use Trigfun for new applications.
Member PolygonAreaExact: Instead of using PolygonAreaExact, use PolygonArea with a Geodesic object constructed with exact = true.