v0.5.1

Modified:

• Partial UI and image changes.
• Partial level content changes.
• Fixed inconsistent collision logic for boxes.
• Increased movement speed for the player and boxes.
• Level structure changed, establishing main and side levels.
• Modified the transition method for some levels.
• Original Chapter 1 and Chapter 2 merged, with some levels removed.

Added:

• Added controller support.
• Added a new chapter "Switch", along with related levels, serving as the new Chapter 3.
• Added chapter change nodes.