Solution to https://github.com/ladybug-tools/ladybug/issues/188. Also see https://stackoverflow.com/questions/59571625/unable-to-pickle-datetime-subclass
Solution to https://github.com/ladybug-tools/ladybug/issues/188. Also see https://stackoverflow.com/questions/59571625/unable-to-pickle-datetime-subclass

boris-p/ladybug,boris-p/ladybug