@deriving(accessors) generates curried functions in uncurried mode

```
@deriving(accessors)
  type msg =
    | ShowToast(string, toast)
    | EnterToast(string)
    | ExitToast(string)
    | RemoveToast(string)
```

This way it's not possible to pass a `showToast` to a function callback. I'm personally not a fun of `@deriving(accessors)`, so I'll remove the usage of it, but still I'd like to let you know about the problem.