Nitro - Updated to V1.1

Hi, 

I just pushed updated roms for the Game Boy Color and Analogue Pocket. Fixed a few little blips reported by Players:

- The timer sometimes shows '01' at the end when it should show '00'

- If you mash the UP button when you have no boosts it slows the game down

- Occasionally the Boost HUD display wouldn't clear once a boost was depleted. 

Thank you ALL for playing.

Shane.