Minor adjustments and bug fixes.

- Bug fixes.
- Improved performance on various devices.
- Balanced gameplay.
- Minor extra adjustments.

- Bugs Fixed
- Lighter and smooth gameplay
- Smaller file zise
- Lots of minor changes
- New name 'Guitar Arena', preparing for soon we'll implement a very new multiplayer game mode.

- New theme and mission
- Adjusted gameplay
- Lots of improvements
- Bugs fixed

- Leaderboards implemented!
- New rewards!
- Events reformulated and new content!
- Many bugs fixed!