roomslist: update changelog

docs/CHANGES.md

@@ -6,6 +6,13 @@
   one chat is visible at any given time. Used in the mobile build:
   `converse-mobile.js` and makes the unread messages counter possible there.
   [jcbrand]
+- New non-core plugin `converse-roomslist`, which shows a list of open rooms
+  in the `Rooms` tab of the control box. [jcbrand]
+- New configuration setting for `converse-bookmarks`:
+  [hide_open_bookmarks](https://conversejs.org/docs/html/configurations.html#hide-open-bookmarks)
+  It is meant to be set to `true` when using `converse-roomslist` so that open
+  rooms aren't listed twice (in the rooms list and the bookmarks list).
+  [jcbrand]
 - API change: the `message` event now returns a data object with `stanza` and
   `chatbox` attributes, instead of just the stanza. [jcbrand]
 - Remove all inline CSS to comply with strict Content-Security-Policy headers [mathiasertl]