TransposedMatrixWrapper does not cast properly into FieldMatrix or DenseMatrix.
The recent commit dune-grid@b2695b3c breaks the compliation of the dune-spgrid python bindings because the Jacobian is returned as transposedView of the JacobianTransposed which is not a FieldMatrix. The return transposedView does not properly cast into FieldMatrix which is the assumed return type in the Python bindings.