New features

- Added multiplayer support up to 4 players
- App opens in Full screen mode
- Press [Escape] key to exit full screen mode
- Reopen in full screen mode by pressing [F] or [f] key from keyboard
- Visual animations of player pieces moving on the board
- Changed new sound effects
- Added list of players in left side of board with images of player pieces
- Added about button
- Added key event [space] bar to roll dice