I implemented the Elastic projections! this is just a first pass, so of course there are issues to be worked out. the oceanic one has a few particular longitudes that it won't project, and the gradient calculation seems to be rong near the section edges. I also haven't synckd up the section gradients at seams. overall, tho, I'm surprised how good I got the gradient calculation, and the interpolation in general, on the first try. I also haven't done any of the inverse projection yet, but I intend to do a better job with these ones than I did with Danseiji's inverse projections.
I also did some light refactoring; Meshed -> Danseiji and setParameters -> initialize, and +docstrings, so that accounts for most of the modified files.
