Added the possibility to simultaneously compute the left and right eigenvectors using the nonsymmetric_lanczos_iteration. Note that, for production cases it shouldn't probably be used as it may be very sensitive to floating point round off errors resulting from the necessity of maintaining the bi-orthogonality between the left and right Krylov basis. A better approach would be to implement the two-sided Arnoldi decomposition (see #33).
Added the possibility to simultaneously compute the left and right eigenvectors using the
nonsymmetric_lanczos_iteration. Note that, for production cases it shouldn't probably be used as it may be very sensitive to floating point round off errors resulting from the necessity of maintaining the bi-orthogonality between the left and right Krylov basis. A better approach would be to implement the two-sided Arnoldi decomposition (see #33).