Minor Fixes

I have a GameMaker 2 permanent license. I decided to revisit this and make a couple quality of life changes.

• Added WASD support for movement (Arrows still work!)
• Intro messages are now skippable with Space
• Fixed a typo
• Prevented Guan from jumping out of bounds in the Temple stage
• Added a hint in the Temple stage if Guan tries to explore it too early