v2.1.5
This is a bugfix to restore the num2date
and utime
behaviour to that before cftime v1.1, which saw a change to return cftime.datetime
objects by default (#165).
Also drops Python 2 since that is now out of support (#157).
The next cf-units release should be a major release, which explicitly adopts and documents cftime's post-1.1 behaviour referenced above.