• Added the value sanitization algorithm for password, search, tel, text, color, email, and url input types. (@Zirro)
• Added Symbol.toStringTag to all web platform classes, so that now Object.prototype.toString.call() works as expected on jsdom objects.
• Added the select.selectedOptions property.
• Removed the toString() methods on various prototypes that returned "[object ClassName]" in an attempt to fake the Symbol.toStringTag behavior.
• Changed XMLHttpRequest to pre-allocate a 1 MiB buffer, which it grows exponentially as needed, in order to avoid frequent buffer allocation and concatenation. (@skygon)
• Fixed a variety of properties that were meant to always return the same object, to actually do so. (@Zirro)
• Fixed inheritance of the runScripts and resources options into iframes.
• Fixed an uncaught exception that occurred if you called xhr.abort() during a readystatechange event.