and use it instead of auto in range-based loops for readability.
Changed: Use getElement(iel) instead of elementBegin()+iel.
Fixed: Don't increment element counter when skipping element
not in current threading group when doing interface integral.

storing basis function derivatives w.r.t. parameter domain coordinates
in the array intended for derivatives w.r.t. Cartesian coordinates

…d 2nd)

derivatives of mixed basis functions w.r.t. Cartesian coordinates,
including the Jacobian and Hessian matrices

Fixed: Solution transfer for mixed in 3D.