• Moved the nonce property from HTMLScriptElement and HTMLStyleElement to HTMLElement. Note that it is still just a simple reflection of the attribute, and has not been updated for the rest of the changes in whatwg/html#2373.
• Fixed the style and on<event> properties to properly track their related attributes for SVG elements. (kbruneel)
• Fixed XMLHttpRequest merging preflight and response headers. (thiagohirata)
• Fixed XMLHttpRequest reserializing content-type request headers unnecessarily. See whatwg/mimesniff#84 for more details. (thiagohirata)
• Fixed element.tagName to be the ASCII uppercase of the element's qualified name, instead of the Unicode uppercase.