dds: transport: add the possibility to specify a disconnect handler.
dds-commander: remove disconnected connection channels from the channels container.
dds: fixed code formatting
dds-info: learned the “agents-list” options. Show detailed info about all active agents
dds-info: simplified mapping of variables to program options.
dds-commander: sends an extended agents info on reply to cmdGET_AGENTS_INFO
dds-getlog: Better error handling and UI messages.