Improve guessing with allDegress.
Add 'Comparable' to XPOLY and Tensor domains.
More efficient coercion.
Make 'Complex(Integer)' into UniqueFactorizationDomain.
'flush': add new function.
Make Lisp compiler less verbose.
Documentation fix.
More efficient power series multiplication.
rewrite RECOP, to avoid unwanted coercion of initial values in guessHPaux
fix typo