Update mumble.proto from https://github.com/mumble-voip/mumble/blob/master/src/Mumble.proto
Update mumble.proto from https://github.com/mumble-voip/mumble/blob/master/src/Mumble.proto

nilsding/mumble-ruby,dafoxia/mumble-ruby,mattvperry/mumble-ruby,fculpo/mumble-ruby