Root init method and node var

[bolismauro]

The Root class has the following code

  public var node: AnyNode? {
    willSet(node) {
      if self.node != nil {
        fatalError("node cannot be changed")
      }
    }
  }

wouldn't be better to update the init to take the node, and make it readonly (let)?

[smaramba]

yes to me. You can still implement the .makeRoot using the new init