Merge pull request #13 from hardening-io/rndmh3ro-changelog

Update CHANGELOG.md

Author: chris-rock

CHANGELOG.md

@@ -2,4 +2,7 @@
 
  * implement hardening tests https://github.com/hardening-io/tests-ssh-hardening
  * setup test infrastructure with kitchen-ansible
- * travis tests
+ * travis tests
+ * Add handlers to restart sshd only when necessary
+ * Add support for Oracle Linux
+ * Update variable documentation