release 0.91.0

Dear users,

We released NZMATH 0.91.0.

Download
========
You can download it from the usual places:
http://downloads.sourceforge.net/nzmath/
http://tnt.math.metro-u.ac.jp/nzmath/


What's new
==========
The biggest change since the last release is the change of
internal of finitefield and elliptic to use newer polynomials.
Old polynomial implementation will be obsoleted soon.

integerResidueClass is renamed to intresidue. In fact,
integerResidueClass remains there for 0.91.0 but will disappear in
coming 1.0.

Obsoleted modules
-----------------
Here is the summary of obsoleted (or to be) modules.
- integerResidueClass -> renamed to intresidue
- polynomial, zassenhaus, rationalFunction -> poly subpackage


Roadmap
=======
I must apologize for the delay. 1.0 will appear in 2009.

I am thinking another pre-1.0 for a few parallelisms: between
finitefield and algfield field extensions, between integer and
polynomial factorization.



Wish you a happy new year with NZMATH!