Implement find & replace methods of bytes objects.
Implement find & replace methods of bytes objects.

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