======
- 9: Fixed error when date object is passed to ``strftime``.
- 11: ``strftime`` now honors upstream expectation of
rendering date values on time objects and vice versa.
- 10: ``strftime`` now honors ``%µ`` for rendering just
the "microseconds" as ``%u`` supported previously.
In a future, backward-incompatible release, the
``%u`` behavior will revert to the behavior as found
in stdlib.