3.4.0

Added

• graceful restart on SIGUSR2 (#3635)

Changed

• BREAKING: SIGUSR2 restarts workers (was exit); run nodemon with --signal SIGINT
• restart handling runs in the master: after upgrade, restart Haraka fully once

Fixed

• shut down when asked during a restart
• reject path traversal in QUEUE DISCARD (#3640)
• survive worker deaths during restarts (#3638)
• send PROXY header with internal cmds (#3634)
• don't miss worker exits in _graceful (#3632)
• clear PROXY timer on disconnect (#3633)
• hand over queues on graceful restart, keep other workers' dot files (#3637)
• don't respawn disconnected workers (#3636)