Scrollview
    A configurable scrollbox designed for pixi.js.
    Features:
    
        
            - Scrollview uses a mask to clip to desired boxWidth/boxHeight size
 
            - Scrollview scrolls with scrollbars (options.overflow=scroll)
 
            - Scrollview's scrollbars may be hidden when not needed (options.overflow=auto or hidden)
 
            - Scrollview may also be scrolled by dragging on the content window (options.dragScroll=true)
 
        
    
    See https://davidfig.github.io/pixi-scrollbox/jsdoc/Scrollbox.html and https://davidfig.github.io/pixi-viewport/jsdoc/Viewport.html
    Let's look at some switch examples:
    
    
        What you should see: Many switches with very different styling and behaviour.