Move "hints" to the bottom of the exercise file

[pwiecha]

Right now hints are attached to the exercise description so NOT reading them is really hard. They often gave me too much help and spoiled the fun of inventing the solution. I suggest to move them to the bottom of the exercise file so the students will "stop and think" before looking at hint.

[opqdonut]

That's a nice idea. Do you remember which hints were the worst spoilers?

[pwiecha]

I'm doing chapter 4 now so I can only speak of few, e.g. Set3a 5,6, Set4a 7.