Some potential updates to the algorithm used to simulate breathing:

1. Fade in - blink - lit - blink - fade out
2. Fade in - lit - fade out
3. Fade in - lit - blink - fade out

Some changes to the design include adding breakouts for all pins so that the program can be updated, and testing with a second LED for alternative patterns of light. By adding breakouts I will have to rotate the ATTiny85 so that the leads don't cross. Because the battery is on the other side, I am unable to put vias in the center of the board because I don't want it to short.