Merge remote-tracking branch 'upstream/develop' into develop
Inhibit Unity tracking in Mirror mode
Removed toggle and added setVisible

As per the latest github request
Merge remote-tracking branch 'upstream/develop' into develop
Fix typo
Remove obsolete lib
Change toggleAgent to setAgentVisible
List of machines
Backup
Fix handling of face loss
Fix error handling
For faster testing
Fix face tracking
Backup
Change perception time stamps to long
Fixed recovery
Some changes on Reeti's face tracking to improve performance.
Merge remote-tracking branch 'upstream/develop' into develop
Merge branch 'develop' into develop-reeti-facetracking-resetproblem
Filter out duplicate messages when no face

And fix other coding infelicities