Updates changelog

CHANGELOG.md

@@ -39,6 +39,7 @@
 - It is now possible to import bitstyles on a per-layer basis, instead of per-module or all at once. It is still possible to override all modules inside each layer in the normal way.
 - There are now design tokens as `design-tokens/focus` to describe a consistent `:focus` appearance, that are currently used in `base/anchor/`, `atoms/buttons`, and `atoms/links`.
 - Anchor elements and `atoms/link` components now have a disabled state, applied using the `aria-disabled` attribute.
+- A new layout component at `atoms/stack`, that lays out its children vertically, with consistent spacing between children.
 
 ## [[5.0.0]](https://github.com/bitcrowd/bitstyles/releases/tag/v5.0.0) - 2023-01-03