New features:
- Equalized music volume for the 3 songs
- Sound off/on wasn’t always properly playing a song
- Sound effect on line clear
- Added grid to play area
- Fixed the music randomization issue
- Last Score displays during the game
- Randomizes between 3 tetris songs
- Game pauses and shows score when game ends (only last score for now)
- Game should pause when you minimize/get a call/etc.