Add CHANGELOG entry for #5482

[ciskip]

CHANGELOG.md

@@ -18,7 +18,8 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
 - We added an option to show the preview as an extra tab in the entry editor (instead of in a split view). [#5244](https://github.com/JabRef/jabref/issues/5244)
 - A custom Open/LibreOffice jstyle file now requires a layout line for the entry type `default` [#5452](https://github.com/JabRef/jabref/issues/5452)
 - The entry editor is now open by default when JabRef starts up. [#5460](https://github.com/JabRef/jabref/issues/5460)
-- We add a new ADS fetcher to use the new ADS API [#4949](https://github.com/JabRef/jabref/issues/4949) 
+- We added a new ADS fetcher to use the new ADS API [#4949](https://github.com/JabRef/jabref/issues/4949)
+- We added support of the [X11 primary selection](https://unix.stackexchange.com/a/139193/18033) [#2389](https://github.com/JabRef/jabref/issues/2389)
 
 ### Fixed