Mention new font metrics feature

Author: justvanrossum

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog for FontGoggles
 
+## [1.9.0] - 2025-12-??
+
+- Add option to show font metrics (ascender, descender, x-height, cap-height). There is a new menu item under “View”: Show Font Metrics (command-6). Contributed by Simon Cozens and Khaled Hosny ([Issue 235](https://github.com/justvanrossum/fontgoggles/issues/235), [PR 507](https://github.com/justvanrossum/fontgoggles/pull/507))
+
 ## [1.8.7] - 2025-06-10
 
 - Synchronize feature compilation strategy with fontmake. This enables Variable Features, and fixes different behavior between fontmake and FontGoggles. ([Issue 486](https://github.com/justvanrossum/fontgoggles/issues/486), [PR 487](https://github.com/justvanrossum/fontgoggles/pull/487))