v0.3 update - 30 new puzzles

In this update, there are 30 new levels exploring new mechanics - I probably shouldn't spoil much here. If you're a returning player, your save file should still work; if you don't have it anymore, you can press shift+U on the level selection screen to go straight to world 4, where the new puzzles start.

Speaking of the level selection screen - it had to be remade, because 70 levels are way too many to fit in a single screen. The levels are now split between 5 worlds, and there's now also a level preview you can look at before deciding which level to play.

I redesigned one of the old puzzles, "Elevator maintenance", because the solution was long and it didn't have a clear pattern, which made coming up with a puzzle tedious. Its new version is probably a bit simpler, but still explores the same idea.

There will be more updates at some point, but I have no idea when will I bring myself to work on it; this one took me over a year, sometimes going months without opening the game engine. If I feel motivated, it will be much faster.