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when v2.4.1 Release Notes

    • 🆕 New MutationObserver scheduler further reduces "time-to-first-handler" in modern browsers. (#198)
      • Also, this works around a horrible IE10 bug (desktop and mobile) that renders setImmediate, MessageChannel, and postMessage unusable as fast task schedulers. Many thanks to @plaa and @calvinmetcalf for their help in discovering the problem and working out a solution. (#197)