Hi, I noticed that several scipy modules now use C++ (at least scipy.sparse and scipy.interpolate). I think it would be better if we could agree on one file extension, instead of something using cxx (scipy.sparse.sparsetools) and sometimes cpp (scipy.interpolate). I don't care which one - I thought .cc was the recommended one for some time, but I am not following C++ anymore, so I am not the best person to make the choice, David