checked current version for initial functionallity
Added codee for building the A sets...

Copied from the Positive Characteristic group at the Macaulay2 2014 Workshop in Berkeley, F-Sing/PosChar.m2, lines 157 to 194. This will need to be
further modified to produce the subsets of {0,1}^n for arbitrary values of n, with structure in place to allow manipluation of the exponents.