[#582] Add a changelog entry

Author: bbatsov

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### New features
 
 * [#567](https://github.com/clojure-emacs/clojure-mode/issues/567): Add new commands `clojure-toggle-ignore`, `clojure-toggle-ignore-surrounding-form`, and `clojure-toggle-defun` for inserting/deleting #_ ignore forms.
+* [#582](https://github.com/clojure-emacs/clojure-mode/pull/582): Make indentation of special arguments customisable.
 
 ### Changes