Propose alternative to student branch

[ramon-astudillo]

this is to discuss possible alternatives and determine (if possible) one to implement

[robertodessi]

If we put things in different files? all the completed file could go under a folder named solutions for instance

[ramon-astudillo]

That is something we considered at the beginning. The idea of the student branch is that it was a technical barrier for people with the temptation to look at the solutions too early. Maybe we can just not make it too obvious where the solutions are.