Changes
/* (n+1)sec Message Structure */
On Receive, the protocol updates who has seen which pieces of the key shares. The protocol also generates a new group key if the new key shares have been received from all participants. Those who have not updated their key shares eventually time out via their heartbeat interval.
====VIII.5.1 (n+1)sec Message Structure====
Every (n+1)sec message sent after establishment of a session has the following format:
