New version with two modes: "Limited parser"-mode and "Normal parser"-mode

This new version gives the player the choice between a "limited parser" and "standard parser". A limited parser is a modern take on parser games where there are only a few verbs which the player is told upfront. This makes sense for this game as the puzzles in this game are not about guessing the right action but about understanding the clues.

Furthermore, "Limited parser" is also relevant to experienced players as there will be single-letter shortcuts for things you otherwise would have to type many times, e.g. P is short for "put book in recess" etc.