bugfixing 0 polynomial when build by a list of 0's (that was the issue with a-a). Improve the representation of a polynomial element. And working on the product, where more test is needed.
prepare a file to develop finite rings that later will be used with the polynomials
sort the constructor. Introduce some TODO and FIXME tags. Bugfix the add opeartion.
fix the checkTypes to be a function decorator
two more minimal TODO and FIXME tags
working on the calculation of the SBoxes, specially on the multiplicative inverse.