Well on development:
Before V1.3, I almost added a random maze generator but then it was told that it was illegal for level generators so it was removed and never added to the game.
Also, there was like a ARE YOU SURE YOU WANT TO EXIT THE GAME thing that was added then I found it annoying so of course I removed it before it was released.
One recent actually is where you can only use your stamina going forward instead of going any other direction. But then I just didn't feel people would like this change so I changed it back.
Pretty much it.