import logging

__version__ = "0.21.1"
version = tuple(__version__.split('.'))

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

import logging

__version__ = "0.21.2rc1"
version = tuple(__version__.split('.'))

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

Bump version 0.21.1 --> 0.21.2rc1