Changed Point3D to be immutable once created. Changed signature for the RingtoetsPipingSurfaceLine.Points property so that the property can be used as an Array. Improved resources. Related to Issue [WTI-381] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@2274 5a3db67b-de53-47b5-99c8-a1c30a6650e2