To run the histogram analysis code in this directory, first run the script
make-Ehist in the parent directory. 

multihist.py (or multihist.bin) performs the majority of the analysis using
only histograms of energy. Once the desired tolerance has been reached,
multihist2D.py (or multihist2D.bin) can be run to use 2D histograms of
E and M to produce susceptibility data.

The file info.multihist, produced by multihist.py, enumerates each call and
records the number of iterations as well as the specified tolerance.