Update Notes for 2021 March 12

The main feature of this update is that a MAC build is now available.

Other changes include:

• various fixes to levels (fixing various visual, tiling, and collision errors)
• ending credits song extended to last entirety of credits
• a few grating sound effects reworked
• slight updates to Chinese and English script

See more in-depth update notes here: https://docs.google.com/spreadsheets/d/1YGXD86y745rT-k0c8AgqJQ_BUWV9XND-XTk1AIPRVoQ/edit#gid=939331021