0.9.0 release

status

README update

add support for _to*Convertor derived classes

* Final clean-up moved to _cleanup() method
* adding _convert_filter() method

pypy 1.9

--HG--
branch : 0.8-dev

pypy 1.8

--HG--
branch : 0.8-dev

pypy 1.7

--HG--
branch : 0.8-dev

idiomatic 'is None' test to solve issue with EnumItem comparisons

--HG--
branch : 0.8-dev

cvc optimization switches as recommended by AV

--HG--
branch : 0.8-dev

release date