> Moved from Less to Sass

I felt like this would never happen

> Opt-in flexbox support is here

Awesome. That's the future :)

> Improved grid system

From a quick look, it still looks bloated for people who don't want to design with mobile in mind

> Reboot

they are using box-sizing: border-box so cheers to that

> Every plugin has been rewritten in ES6

nice!

> Improved documentation. We rewrote it all in Markdown

wow it looks really nice now

I've dropped Bootstrap a year ago in favor for Semantic-UI. I'm curious to see how this new version holds up.