minor #123 Adding details to LiveComponent changelog about parent-child changes (weaverryan)

This PR was merged into the main branch.

Discussion
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Adding details to LiveComponent changelog about parent-child changes

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Tickets       | none
| License       | MIT

CHANGELOG for #113, which I forgo to include.

Cheers!

Commits
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0a6684c Adding details to LiveComponent changelog about parent-child changes

Author: weaverryan

src/LiveComponent/CHANGELOG.md

@@ -2,6 +2,14 @@
 
 ## NEXT
 
+-   When a model is updated, a new `live:update-model` event is dispatched. Parent
+    components (in a parent-child component setup) listen to this and automatically
+    try to update any model with a matching name. A `data-model-map` was also added
+    to map child component model names to a parent - see #113.
+
+-   Child components are now re-rendered if the parent components passes new data
+    to the child when rendering - see #113.
+
 -   Minimum PHP version was bumped to 8.0 so that PHP 8 attributes could be used.
 
 -   The `LiveComponentInterface` was dropped and replaced by the `AsLiveComponent` attribute,