Continuously adjust the throb time.

Wish I'd realized sooner that I can totally do this now. Much smoother.
Tune down the ramp up time a little more.
MenuMode kicks off the game.
Menu mode sits on top of the game mode.

This will make a difference when it sits on top of a completed game.
Timer bar shows our progress
I gave that TimerBar an outline.

TimerBars love outlines.
Re-init between rounds.
MenuMode shows the score from the previuos round.

It also has a little UI underpinnings.
TimeBar progresses downward.