=========== SymPy 0.6.4 =========== 4 Apr 2009 * robust and fast (still pure Python) multivariate factorization * sympy works with pickle protocol 2 (thus works in ipython parallel) * ./sympy test now uses our testing suite and it tests both regular tests and doctests * examples directory tidied up * more trigonometric simplifications * polynomial roots finding and factoring vastly improved * mpmath updated * many bugfixes (more than 200 patches since the last release)