We don't need to remove mixins because that's one of the biggest reasons people use createClass(). So it's enough to just separate createClass() and then we was

We don't need to remove mixins because that's one of the biggest reasons people use createClass(). So it's enough to just separate createClass() and then we wash our hands, and it lives its own life. We won't use it but others are free to if they like it. No specific timeline but we might I'd say within half a year is likely.