• Added a full-featured, spec-compliant Element.prototype.classList, closing out a three-year old issue! (@wacii)
• Made virtualConsole.sendTo(console) forward "jsdomError"s to console by calling console.error. This can be turned off by doing virtualConsole.sendTo(console, { omitJsdomErrors: true }).
• Fixed errors when trying to parse invalid doctype declarations, like <!DOCTYPE>.
• Fixed spurious "jsdomError"s that were emitted after calling window.close().
• Fixed the DOMSubtreeModified event to fire in more cases. Note that our mutation events implementation remains incomplete, and will eventually be removed (in a major release) once we implement mutation observers. (@selam)