Equatable enums treated as complex enums

[angelolloqui]

This code:

private enum Planet: Equatable {
    case mercury, venus, earth
    case mars, jupiter, saturn, uranus, neptune
}

Should be transpiled to:

private enum class Planet {
    mercury,
    venus,
    earth,
    mars,
    jupiter,
    saturn,
    uranus,
    neptune
}
```

But it is currently:

```
private enum class Planet (val rawValue: Equatable) {
    mercury(0), venus(1), earth(2), mars(3), jupiter(4), saturn(5), uranus(6), neptune(7);

    companion object {
        operator fun invoke(rawValue: Equatable) = Planet.values().firstOrNull { it.rawValue == rawValue }
    }
}
```

[angelolloqui]

Fixed with #109