fix: issue2551278 - datetime.datetime.utcnow deprecation. We now use the timezone aware utc dates for python 3.11+. But we have to make all the rest of the dates (datetime.min, unix epoch date) timezon aware so we can subtract them. Also need to marshall/unmarshall timezone aware iso formatted date strings.

#!/usr/bin/env python
from __future__ import print_function
import zlib, base64, sys
print(base64.encodestring(zlib.compress(sys.stdin.read())))