I have tested 2.1.16 on trusty and I can confirm that it replaces "Delete=False" with "delete=False" in /var/lib/mailman/Mailman/Handlers/Tagger.py.
I have tested 2.1.16 on trusty and I can confirm that it replaces "Delete=False" with "delete=False" in /var/lib/ mailman/ Mailman/ Handlers/ Tagger. py.