Hertzon v0.2.2

Changed

• AURA refinement keeps curved surfaces exact (hzAURA): EMerge 55ebd4d. Where a new node on a curved
  face or edge cannot be moved onto the CAD geometry by bisection, it is put there anyway and the elements
  around it are re-meshed as a constrained Delaunay cavity, instead of leaving the node closer to the chord
  (a dent). Faces that are neither spheres, cylinders nor planes are followed by a bicubic interpolation of
  their CAD parametrisation: on a lofted free-form body new surface nodes stay within 0.14 mm of the face
  (was 1.4 mm). AURA's refinement time is unchanged. The setting is now called hzAURA (EMerge); projects
  and scripts with "AURA (EMerge)" keep working and keep their solutions.
• More accurate RCS of scattering problems: with an incident plane wave, Auto Open now leaves one
  wavelength of air around the objects (was half a wavelength), and the far field is integrated with Gauss
  points over a box λ/8 around the scatterers instead of over mesh faces halfway to the boundary. For the
  250 mm PEC sphere at 1 GHz the error of the bistatic RCS against the exact solution drops from 0.6 dB to
  about 0.4 dB (monostatic from +1.4 dB to +0.2 dB), with fewer tetrahedra (26k instead of 38k). A padding
  set in the design is used as before.

Windows installer (Hertzon-Setup-*.exe) and Linux package (Hertzon-*-linux.tar.gz).

Hertzon is built on EMerge, the open-source FEM solver by
Robert Fennis, which provides the finite-element core.