Haskell For Dilettantes, Part 9

We finish Homework 3, which gives us a completely playable Sokoban game including a start screen and win screen. I make many goofy mistakes along the way.

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[ICopiedJohnOswald]

In Haskell all functions are implicitly curried. This means that the following to type signatures are the same:

```
moveFromTo :: Coord -> Coord -> Coord -> Coord
moveFromTo :: Coord -> Coord -> (Coord -> Coord)
```