C++ Curvilinear Operators

[bewagner1]

The MATLAB / Octave implementation of MOLE includes curvilinear operators in 2D and 3D while the C++ implementation does not. I think it's best to wait until the grid structure is implemented to implement the curvilinear operators.

Keep-open request

• I am requesting maintainer review for keep-open.

Reason: Waiting until the grid structure is implemented.

[Tony-Drummond]

Hi @bewagner1, I agree. I will add this to the list of C++ implementations (see issue #436)