Mithril[0] has had those three points since the beginning.
Updates to their documentation will soon reference Parcel instead of Webpack, but neither are required. Just include the file in your html and the reactivity (and routing!) are included.
The reason I like it is because you have to understand the core concepts. But once you do, you can easily build on them to get what you need. And it remains fast even if you don’t do things perfectly idiomatically. If that makes sense... So it’s probably best for small teams that want to be very fast and effective.