Started rebuilding the Python scripts, based on the work done for the InAs paper.

Modified the multi-tau correlator to deal with long runs with fine resolution by making the counts unsigned long longs.
Fixed a bug in the way that channels are printed for intensity dependent calculations. Before, the channels were determined by the index of the histogram dimension, which works for t2 data but fails when multiple histogram dimensions are associated with a given channel (t3 data).
Changed idgn to keep track of photons in a queue, pushing to the gn only when needed. This is a much more efficient process because it only costs as much as a normal gn, rather than the cost associated with adding histograms together.

Also working on the Python code for reading GN.