New Files
earth_spherical.py is an incomplete module for a 3D spherical earth solution.
sloppy_plots.py contains methods for analyzing and  plotting the sloppiness of
    solutions.
timeContour.py is a new plot for plotting the evoloution of single contours
    over time.
Methods added for grounded ice.
Beginning mcmc methods for giasim.
Cleanup for grid tools and area definitions.