Support old-style and new-style classes
Support old-style and new-style classes

brython-dev/brython,brython-dev/brython,jonathanverner/brython,Hasimir/brython,brython-dev/brython,kikocorreoso/brython,Hasimir/brython,Hasimir/brython,Hasimir/brython,jonathanverner/brython,jonathanverner/brython,jonathanverner/brython,kikocorreoso/brython,kikocorreoso/brython