The creation and update features of the app has been implemented.
Redundant user handling has been removed and is wholly managed by
Auth0.

The UUID library now uses overrides instead of the inherited Buffer
methods for better deserialization.

TODO: add conversions across layers from database to controller.

There is initial effort in implementing Auth0.

The playback system is straightforward that it maps every note into its timestamps when
to start/stop playing. Included are the start and end indices when the notes are highlighted
in the data textarea.

Implement input in form.