Balloon Bound v0.2.12

Changelog:

• Added audio in the game (CC0).
• Now have a simple option to toggle BGM and SFX off.
• Updated score text animation. "KM" is not included in the animation anymore.
• Adjusted background color to have more contrast with the player and obstacles.
• Fixed a bug where the score doesn't reset when quitting the game and then starting again.
• Fixed a bug where the score tick animation affects the actual scale of the text when quitting the game while the score tick animation is playing.
• Made the version text display in the title screen only.
• Improved difficulty scaling pace and made it faster by 40%.