send bye-bye notifications for "silent" (not-actively) announced devices/services
send bye-bye notifications for "silent" (not-actively) announced devices/services

coherence-project/Coherence,ismaelgaudioso/Coherence,coherence-project/Coherence,unintended/Cohen,ismaelgaudioso/Coherence,furbrain/Coherence,furbrain/Coherence,opendreambox/python-coherence,unintended/Cohen,sreichholf/python-coherence,sreichholf/python-coherence,opendreambox/python-coherence