GH #327 - Added Sentry logging.
Merge branch 'dsuch-f-gh327-add-sentry-client'
GH #327 - Register Sentry handlers ourselves rather than relying on its doing so automatically.
GH #326 - Catch all CLI exceptions and return a dedicated status code (16) when they happen.
Merge branch 'dsuch-t-gh326-cli-statuses'
Merging from master.