A round of fixes straight from your reviews and messages.
No more auto-advance. Finish a level, and you get a choice: Next Level, or Stay. Plus << PREV and NEXT >> buttons at the top of the map (and the [ ] keys) to move along the track without going back to the menu.
Normal number fields. Click a number, type a new one, press Enter. No more sliders, no more values changing because you clicked near them.
Step button. Run your program one tick at a time and watch it think.
Leaderboard off. A new setting hides the standings and records beside the map if you'd rather not see them.
Leaving a level never asks. Your canvas is saved automatically when you move on, and it's there when you come back.
Small things. Free play now starts paused like everything else