Change notes:
V1.1: Shortened the timer in 1-1 to prevent a glitch in which, if the player were to ride the moving platform across the goal, the game would freeze.
V1.2: Altered an obstacle in 1-3 to prevent an unintended method of clearing the stage, and added a small pit to facilitate retrying the stage.
V1.3 (current): Added a custom BGM track (composed by JonnyManjiro) that is played on stages 1-2 and 1-4.
