* Extended PipingSurfaceLine with properties * Introduced Point3D class * Extended PipingSurfaceLinesCsvReader to read correctly formatted files Related to Issue [WTI-20]git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@281 5a3db67b-de53-47b5-99c8-a1c30a6650e2Former-commit-id: dcde392c6738f6e5eb61314129fa316cd3ca080a