Update changelog

extensions/ql-vscode/CHANGELOG.md

@@ -3,6 +3,7 @@
 ## [UNRELEASED]
 
 - Add friendly welcome message when the databases view is empty.
+- Add open query, open results, and remove query commands in the query history view title bar.
 - Max number of simultaneous queries launchable by runQueries command is now configurable by changing the codeQL.runningQueries.maxQueries setting.
 - Fix sorting of results. Some pages of results would have the wrong sort order and columns.
 - Remember previous sort order when reloading query results.