Another bug fix update before I start making a major update.

Fixed an issue in endless mode where, after unlocking the bug zapper, the bug spray would make a shotgun noise.

Made it to where pressing the restart button after dying in endless mode brings you back to endless instead of normal.

Fixed an issue where mosquitos could hit you multiple times. Also added an icon when you're hit by mosquitos to clarify that you lose water.

Updated the sprites of the music buttons, close button (which will soon actually work), and start button.

Changed Pierce J's credit at his request.