Make Cozmo Sometimes Play Wrong Notes

[gbroques]

Cozmo needs to play the wrong note sometimes.

When Cozmo plays a note, there should be a small probability to play a random note.

This probability should increase with the length of the series to simulate the sequence becoming harder to remember.

This issue should take care verifying he played the correct notes, based upon the current place in the main game loop.

Cozmo playing a series of notes will be handled in issue #6.

The wrong note interaction will be taken care of by issue #7.

[gbroques]

See commit 2131c69.

This was complete, but I took it out for now until after the demo.