Implement old "cheat sheet" into wiki

[Supergecki]

I remember there being a cheat sheet with the most useful API commands you can use that was being distributed during the last LSGM Mathecamp.

Is it still available? If yes, I would like it to be shared so we could (1) publish a PDF version downloadable for everyone and (2) put these helpful commands into the wiki.
(I mean, I already forgot again that the World class has a method called nearest_seeker, which does make some programming tasks easier, especially for beginners.)

[Supergecki]

If it is not available anymore, we'd have to create a new one, I could do that if you wish to.

[Kiyotoko]

If I remember correctly, Bela created the cheat cheet.

[Supergecki]

Karl proposed to (instead or additionally?) create a page with a plain list of the game's interfaces, i.e. its classes and methods.