Update version numbers to 9.0. (#65)

Update version numbers to 8.0. (#64)

Update versions to 7.2. (#62)

* Add outputChangedCounter.

Update versions to 7.1. (#60)

Update copyright to 2022. (#59)

Update copyright to 2022. (#59)

Fix bug where Sphinx speech component omits audio at end of video fil…

…es (#55)

Co-authored-by: Jeff Robble <jrobble@mitre.org>

Update versions to 6.3. (#54)

Update versions to 6.2. (#53)

Update versions to 6.1. (#50)