Updated all objects to new API

heading.go

@@ -15,7 +15,7 @@ func NewHeading (level int, text string) *Heading {
 	if level < 0 { level = 0 }
 	if level > 2 { level = 2 }
 	this := &Heading { TextBox: tomo.NewTextBox() }
-	theme.Apply(this, theme.R("objects", "Heading", fmt.Sprint(level)))
+	tomo.Apply(this, tomo.R("objects", "Heading", fmt.Sprint(level)))
 	this.SetText(text)
 	return this
 }