New stanza interfaces:
Adding a message receipt request:
msg['request_receipt'] = True
Adding a message receipt:
msg['receipt'] = '123-24234'
Retrieving the acked message ID:
ack_id = msg['receipt']
print(ack_id)
'123-24234'
New configuration options:
auto_ack:
If True, auto reply to messages that request receipts.
Defaults to True
auto_request:
If True, auto add receipt requests to appropriate outgoing
messages.
Defaults to False
