4. Precised calculation of derivatives of surface of revolution is implemented for the points of surface placed on the axis of revolution (Geom_SurfaceOfRevolution.cxx)
5. Small modifications are made to adjust algorithms to new behavior of B-spline calculation.
6. Test cases were modified according to the modern behavior.
7. Changes in BRepLib_CheckCurveOnSurface to use adaptors instead of geometric entities
9. Added methods to access directly poles, knots, multiplicities of BSpline curves and surfaces