v0.11.1

• Add: Node.prototype.parentElement. (@lukasbuenger)
• Fix: attributes that are reflected as properties should be '' when not present, instead of null. (Note that getAttribute still returns null for them). (@thejameskyle)
• Fix: textContent now works for nodes that do not have children, like text nodes for example. (@hayes)
• Fix: jsdom.jQueryify was using the wrong URL for jQuery by default. (@lukasbuenger)