Version 0.5.0

Changes

• [lib][breaking] Removed relay-v2 ability again.
  • This fixed some relay signalling issues, where no connection could be made with --force-relay under some circumstances.
• [lib][breaking] Exposed the state of the established transit connection
  • The transit module now returns whether the established connection is direct or not and the peer/relay's IP address
  • The transfer and forwarding modules now take a transit_handler argument. Use &transit::log_transit_connection as default value
• Various bugfixes