Add changelog entry for aria-pressed

packages/webamp-docs/docs/12_changelog.md

@@ -1,6 +1,5 @@
 # Changelog
 
-<!--
 ## Unreleased
 
 _These changes are not yet published to NPM with an official version number._
@@ -8,7 +7,10 @@ _These changes are not yet published to NPM with an official version number._
 :::tip
 If you want access to the changes in this section before they are officially released you can do `npm install webamp@next`, or use it via CDN at `https://unpkg.com/webamp@next`.
 :::
--->
+
+### Improvements
+
+- Toggle buttons (Shuffle, Repeat, the EQ and playlist window toggles, and the equalizer's On and Auto buttons) now expose their state to screen readers with `aria-pressed`.
 
 ## 2.3.1