beginnings of full May SS computations
fix a bug in +hadamardProduct
fixed another remarkable bug in EXTMatrix. did i not test this with matrices of dimension > 1???
a fix to +assemblePresentation and a minor change to the number of calls to it
ton of fixes to some of the higher dimensional code.  also: partial implementation of the MSS for the full Steenrod algebra.  presently extremely slow, broken, only "works" up to E_2.