Added debug output.
Added try-catch.
Added Cylinder::constParamCurves.
Debug output.
Added assertion to prevent core dump.
Fixed merge conflict (both fixing the same core dump caused by NULL ptr).
Fixed merge conflict (both fixing the same core dump caused by NULL ptr).
Merge branch 'missing_loop_cv'
Merge branch 'master' of https://github.com/SINTEF-Geometry/GoTools