added more explicit title
Merge branch 'master' of http://github.org/dcherian/eddyshelf
back to working on budget. *linear* interpolation works well. cubic(pchip) results in extrapolation that screws things up.

Right now, continuity works well. The worst values are at the bottom right where the z-surface intersects bathymetry. The interpolation must not be great there.

I havent' checked time derivative terms for the vorticity yet, but code runs and produces plots