Index: CHANGELOG.md
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--- CHANGELOG.md	(revision d18c60e0878b426798d32187e85100a2262f1430)
+++ CHANGELOG.md	(revision 0688b5fcf8935a7e243f429c90946fd67027fb3c)
@@ -7,4 +7,6 @@
 
 ### Added
+- **Set a post's language.** Choose the language you wrote a post in — on the fediverse it enables
+  timeline language filtering and the translate button.
 - **Alt text for images.** Give your cover image a description (and inline images keep their own
   alt text) — it federates to the fediverse and lets screen readers describe the picture.