message: fixed inheritance structure in SolidStiff class in constitutive.pyx
diff: @@ -110,6 +110,14 @@ cdef class SimplePlaneStress(PlaneStress):
  return
  cdef class SolidStiff(Constitutive):
  + def __cinit__(self, *args, **kwargs):
  + '''
  + Wraps the SolidStiffness class that is used with 3D elements
  + '''
  + self.ptr = NULL
  + return
  +
  +cdef class isoSolidStiff(Constitutive):
  def __cinit__(self, rho, E, nu, *args, **kwargs):
  '''
  Wraps the SolidStiffness class that is used with 3D elements
  