Delegate method not called when deselect color 

Hi !

First, thank you :)

When I'm deselecting a color, the delegate method is not called. Am I missing something ?
This method is only called when changing color selection.

```
func colorPickerView(_ colorPickerView: ColorPickerView, didDeselectItemAt indexPath: IndexPath) {
    // A color has been deselected
  }
```

Thanks for your help !