It was only a year and a half ago when Shane Osborne introduced BrowserSync here. It does those things we really love as front end devs: style injection, reloading when necessary, and running a server so you can test across multiple devices and see that stuff happen across all of them. But it did more: synced forms as-you-type, synced scroll position across devices, even followed links so as you navigated around the site all the devices would come with you.
It’s great to see 2.0 launch with a UI for configuring it and some nice new features.