Add Death Sound

Adds a sound for when the player dies.
Return to Title After Death

Not an ideal nor final solution, but at least it lets you restart for
now.
Pause Game During Death Noise
Kill Player if They Fall Off the Screen

The stairway to heaven's a one-way trip. Didn't you know that?
Merge branch 'game1-sound' into game1
Separate Monster Initialization from Constructor

Moves some monster initialization into a function so that Monsters can
be recycled and reinitialized after creation.