v1.8.4

Changed

• Preset 0 (720p, 30fps) is now the default recording option (#640)

Fixed

• Zombie processes eventually causing chromium or X to fail (#673)
• Pipeline getting stuck with Participant composite when a track is unpublished (#635, #644)
• ImageOutputs broken when used with other outputs (#642)
• Fixes to jitter buffer and track synchronizer for track/track composite egress (#643, #660)
• Race on shutdown causing some final updates not to send (#666, #667, #674)