      
      Animatable.
      
-     The default value is `false`.
-     */
-    public var isScrollStretchable: Bool = false {
+     The default value is `true`.
+     */
+    public var isScrollStretchable: Bool = true {
         didSet { update() }
     }
     

        }
    }
    
    var minOffset: CGFloat { return !isScrollStretchable ? topPadding : max(topPadding, bounds.height - (header?.bounds.height ?? 0) - scroll.contentSize.height) }
    var maxOffset: CGFloat { return max(minOffset, bounds.height - minContentHeight) }
    var anchorOffset: CGFloat? { return anchorFraction.flatMap { bounds.height * (1 - $0) } }
    

            super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context)
            return
        }
        guard !isScrollStretchable else { return }
        update()
    }
    
