changelog: add struct updating syntax (#7883)

CHANGELOG.md

@@ -3,13 +3,13 @@
 - `vweb` now uses struct embedding: `app.vweb.text('hello') => app.text('hello')`.
 - Consts can now be declared outside of `const()` blocks: `const x = 0`.
 - Allow overloading of  `>`, `<`, `!=` and `==` operators.
+- Add struct updating syntax: `Mystruct{ ...ms, name: 'new' }`.
 
 ## V 0.2.1
 - Hashmap bootstrapping fixes.
 - Array decomposition to varargs: `fn sum(i ...int) int` => `a := [2,3,4] println(sum(a...))`
 - HTML module docs generated by vdoc now have global search.
 
-
 ## V 0.2
 *22 Dec 2020*
 - Compile-time memory management via `-autofree`. [Video demonstration](https://www.youtube.com/watch?v=gmB8ea8uLsM).