* Create and Read extension methods for StabilityPointStructure instances. * Introduced RoundedDouble.NaN constant (removes the proliferation of casting from double.NaN to RoundedDouble) Related to Issue [WTI-911] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@6162 5a3db67b-de53-47b5-99c8-a1c30a6650e2