Szmap TK 1.3.1

Major bug fixes

Fixed a critical problem that was causing crashes when duplicating OESzmapResults objects using the copy constructor or assignment operator.
Molecules returned from OESzmapEngineOptions::GetProbe, OESzmapEngineOptions::GetProbeMol OESzmapResults::PlaceProbeSet, OESzmapResults::PlaceProbeMol, and OESzmapResults::PlaceNewAtom, are now all explicitly marked as three-dimensional. This allows the coordinates to be written properly in .sdf format.