Update #next doc

Author: kLabz

doc/react-next.md

@@ -24,6 +24,7 @@ Further changes added in `#next`:
 * [`6e8fe8d`](https://github.com/kLabz/haxe-react/commit/6e8fe8d) Allow String variables as jsx node
 * [`d173de0`](https://github.com/kLabz/haxe-react/commit/d173de0) Fix error position when using invalid nodes in jsx
 * [`578c55d`](https://github.com/kLabz/haxe-react/commit/578c55d) Disallow invalid values inside jsx when a fragment is expected
+* [`425cb6c`](https://github.com/kLabz/haxe-react/commit/425cb6c) Ensure individual prop typing, allowing abstract props to do their magic
 
 ## ReactComponentOf cleanup