[feature request] threaded connection

[lordkitsuna]

Would be awesome to have support for threaded connection. I host my own relay and with multi threaded connections (like testing with iperf3 and such) i can get 400Mbps between my two main networks but single threaded connection usually caps at 50Mbps. Would be nice to chunk out the compressed file and send in multiple connections

[Erokos]

Sorry, did you have any problems setting up the relay? Because when following the docs I get the following error:
Error: server requires version to be set: could not parse provided string into semantic version