Fixed a critical bug that prevented the game to start correctly. Now it should be possible to actually play the game! (thx @cat24)

• Due to the hotfix nature of this version, there's a new WIP block: the elevator
• Added gravity slider - you can now change ball gravity in real time! (Values are not based on real scientific planet data)
• Updated color scheme - now colorblind-friendly for better accessibility

Known Issues:

• Multi Marble spawn is broken
• Gravity slider doesn't work anymore :°