Start work on fitResidualsInterpolatedMultipoles function
Change chiSquareProbability to return 1-chiSquareProbability, i.e., prob of getting chisq greater (instead of less than) specified value.
Flesh out fitResidualsInterpolatedMultipoles
Rename saveFitData to saveFitVector and add loadFitVector
Flesh out the usage string for fitResidualsInterpolatedMultipoles