Changes since 1.4.0:
* Renamed file 'an-error-has-occured' to 'an-error-has-occurred', to correct a spelling issue.
* Replaced broken prompts: 'bar', 'was-last-seen', 'press-the-space-bar', 'up', 'oops2', 'pennsylvania'
* Added file 'extra-sounds-<language>.txt'.
* Removed many files that were duplicated from core sounds.
* Fixed padding of 'zip-code'.
* Added prompts: 'access-denied', 'access-granted'
* Added prompts: 'hello', 'good-morning', 'good-afternoon', 'good-evening'