Planet Breaker App-Release 0.8.4

Brand new:
+ New Energy-Bar! Weapons now consume energy
+ New weapon upgrade system (alpha)
+ Fire and frost effects have been added
+ New menu and new planet selection
+ A brand new Tutorial-Mode was added
+ Added a debug mode
+ New Info-Popup

Adapted:
* Asteroids move the player to the center when touched
* Asteroid spawn feature expanded
* Performance optimizations
* Planet-skins have been revised
* Leaderboard visual adapted

Removed:
- Map spawn-Bug removed
- Some Weapon-Bugs removed
- Fixed Tutorial-Bugs