TODO

General

Server ping client?
LastSeen: relative time [s] or [ms]?
Android crash: Empty latency => app restart => empty client list
Android clean data structures after changing the Server
UDP based audio streaming

Server

Provide io_context to stream-readers
fd stream
UDP/TCP stream
gstreamer snapcast sink plugin?
"sync" option for streams (realtime reading vs read as much as available)
Override conf file settings on command line

Client

revise asio stuff