Here's a list of all the patches that have been pushed out since release, in chronological order.

Spoilers! I can't classify them, so be careful yourself and don't click if you haven't beaten the game:

• W1-??? had a second "Path of light" (which did nothing).
• Achievement "Encoded" now triggers with its specific codes.
• Selecting up from W1-5 now selects W1-5.1 instead of W1-5.2 as a default.
• Added a settings button to the pause menu:
• • Ability to tweak SFX values.

• • Ability to tweak BGM values.

• Added hint text to "W3-7.1", I'll tweak that level in the future.
  
• Updated settings sound sliders to now say "Music" instead of "M"
  
• Removed a ghost block in ending.
  
• Fixed Shadow Step's hint level.
  
• W3-10 is now beatable with its purple star. (Sorry about that!)
  
• Changed Reunion's outside screen, now helps with a different puzzle.
  
• Your game will now default to 1920x1080 upon first booting up.
  
• Fixed an issue where red outlines (inverse indicator) wouldn't show up, visual bug.
  
• Increased undo cap to 1k moves. (Pretty much infinite)
  

Thanks again for playing! This has been a wild release week thanks to you all.