I was working on this for quite a bit, and some of the changes might slip my mind. But here's a pretty comprehensive list of changes:

Major:
- Rosa has been given new animations for flapping its wings.
- Wendy now has a proper idle animation. (I don't know how I kept forgetting to do this. Whoops!)
- An extra hint has been added to the eyes of the sun puzzle.
- A way to re-watch the credits has been added to the museum if you have achieved the best ending.
- The hidden achievement "oops" has been given a secondary method of being achieved.

Minor:
- Multiple softlocks have been fixed, many resulting from errors with repeated cutscenes in edge cases, and others resulting from small errors in area design.
- A major crash with a small chance of happening has been fixed in the final boss fight.
- A bug with a late-game boss fight which caused misleading feedback has been fixed.
- Multiple typos and script errors have been fixed.