update release notes

Signed-off-by: Nikolaj Bjorner <[email protected]>

enable pypi public

Signed-off-by: Nikolaj Bjorner <[email protected]>

remove nuget signing steps

add missing dependencies

Signed-off-by: Nikolaj Bjorner <[email protected]>

remove copy of LICENSE.txt - pypi doesn't take it

install setup tools for python packaging

Signed-off-by: Nikolaj Bjorner <[email protected]>

bump timeout for jobs

Signed-off-by: Nikolaj Bjorner <[email protected]>

reduce hash table lookups in expr_abstract in half

add _0 to platform tag for pypi

Signed-off-by: Nikolaj Bjorner <[email protected]>

update version number and release notes