Upgrade to release 3.1.0:
- Declare support for Python 3.9
- testing/docs: Include doctests in testing
- Allow custom "now" in naturaldelta and naturaltime
- Represent with a zero if the delta is too small
Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Acked-by: Trevor Gamblin <trevor.gamblin@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
