prepare changelog for release v1.67.1

Author: rolandwalker

changelog.md

@@ -1,11 +1,11 @@
-Upcoming (TBD)
+1.67.1 (2026/03/28)
 ==============
 
 Features
 ---------
 * Respond to `-h` alone with the helpdoc.
 * Allow `--hostname` as an alias for `--host`.
-* Suggest tables with foreign key relationships for JOIN and ON (#975)
+* Suggest tables with foreign key relationships for JOIN and ON (#975).
 * Deprecate `$DSN` environment variable in favor of `$MYSQL_DSN`.
 * Add a `--progress` progress-bar option with `--batch`.