Update code for layouts, objects

label.go

@@ -10,8 +10,8 @@ type Label struct {
 // NewLabel creates a new text label.
 func NewLabel (text string) *Label {
 	this := &Label { TextBox: tomo.NewTextBox() }
-	this.SetRole(tomo.R("objects", "Label", ""))
+	this.SetRole(tomo.R("objects", "Label"))
 	this.SetText(text)
-	this.SetAlign(tomo.AlignStart, tomo.AlignMiddle)
+	this.SetAttr(tomo.AAlign(tomo.AlignStart, tomo.AlignMiddle))
 	return this
 }