Increased the version number of MatricesForHomalg.

Needed the Iterator  for homalg matrices.
Completed IsPrimeZeroDim for finite coefficient rings.
Some corrections on IsPrimeZeroDim in the case that the coefficients ring is finite.
Added the second case of IsPrimeZeroDim.

Implemented the case of infinite coefficients ring of the algorithm.
Some values are needed in both cases, so I put them before the two cases.
Added some comments.
Some smaller corrections in IsPrimeZeroDim.

Put the local variables in correct order.
Corrected the bool variable. It didn't work with values 'true' and 'false'.
Merge pull request #7 from HemEM/master

Some smaller corrections in IsPrimeZeroDim.