Eldar Gabdullin

No, there would be only one update incorporating both props and state changes. This is what currently happens with [react-calendar/sample/parcel](/wojtekmaj/react-calendar/tree/master/sample/parcel) app. On other hand, immediate invocation of `onChange` callback yields...

> Seems imutability-helper far away from Immutable.js when mutating. Of course it is... There are so many `invariant` checks and expensive paths, e.g. ```js invariant( typeof spec === 'object' &&...

Yes, this is not beyond the scope. We can add it after new stream interface will be released. Don't think it is wise to bother with it right now