Improved approximation

14. Improved approximation of vertical (XZ or YZ) ports for template generation

We have found that in previous software versions, some of the conformal mesh information was lost when switching from the 3D model to the 2D one for mode template generation. This deficiency has been corrected in version 6.0. The main consequence is substantially improved accuracy of impedance calculations in horizontal coaxial lines, and the resulting improvement in S-parameter extraction.