• Added jsdom.nodeLocation(node) to get the location within the source text of a given node.
• Added jsdom.reconfigureWindow(window, { top }) to allow changing the value of a window's top property.
• Added the element argument to the custom resource loader, so you can customize resource loads depending on which element loaded them.
• Updated getElementsByClassName to match the spec. It now correctly splits on whitespace to try to find elements with all the given classes; it returns a HTMLCollection instead of a NodeList; and it memoizes the result.
• Updated NodeList and HTMLCollection to match the spec. The most noticable change is that HTMLCollection no longer inherits from NodeList.