import logging

__version__ = "0.20.1rc3"
version = tuple(__version__.split('.'))

logging.getLogger(__name__).addHandler(logging.NullHandler())

import logging

__version__ = "0.20.1rc4"
version = tuple(__version__.split('.'))

logging.getLogger(__name__).addHandler(logging.NullHandler())

Bump version 0.20.1rc3 --> 0.20.1rc4