[iot-discussion] improved clarity on the IoT mailing list

Could people *please* stop replying on the list to email digests? It's far better and clearer for everyone to reply to individual messages. Better still is using relevant, meaningful Subject: headers. This makes it a lot easier to follow the discussion thread. It also helps whenever someone later needs to consult the list archives. An email discussion about the number of WG co-chairs (or whatever) under a Subject: thread of "Digest, Vol X, Issue Y" from some months ago will not be particularly useful. thanks