Update 1.2.3d

Update 1.2.3d
- Fixed a bug in the mission Mia Green Is Missing where the bot would shoot off too fast.
- Adjusted the volume levels of moving barriers, collision warning beep, and bots.
- Fixed a bug where rival car sounds didn't stop when the rival died.
- Added some Steam leaderboard supporter badges.
- Fixed a bug where an arcade style controller would not work without a gamepad connected.
- Fixed a bug where zig zag graphics would be cancelled on both sides when missing a note.