5.1.3 fix connection switch status db encoding (#781) ntf server: better batching and logging (#780)

5.1.2 (was pre-release) agent: ack message in case of decryption error (#759) Docker entrypoint fixes (#753) add more message delivery tests (#763) install.sh: fixes (#765) install: some more fixes (#770) install: simplify systemd service and add new helper stopscript (#771) run a single batch test to avoid hanging on server disconnect (#773) connection switch - track status, stop switch command (#764) rename "stop switch" -> "abort switch", add canAbortSwitch to rcv queue info (#775) return updated ConnectionStats from switchConnectionAsync (#777) batch subscriptions for ntf server (#778) 5.1.2, ntf server 1.4.1