Updated BubbleMania to version 1.1.

Changes:

• Fixed an issue with the skybox fog not loading correctly
• Fixed an issue with the music volume slider not affecting the music volume
• Fixed an issue with the volume sliders only affecting volume once updated, and not persisting the settings every time the game is launched
• Change the scaling of the volume sliders to give smoother audio volume changes
• Reset Game button now also resets the volume sliders, on top of resetting the game save
• Tweaked splash screen colourisation
• Incremented Unity version
• Added version number to main menu