update CHANGELOG.org. Address issue #217

Author: Ron89

Diff for: CHANGELOG.org

@@ -28,7 +28,9 @@
 *** Removed
     - Removed the requirement for TODO state keywords to be upper-case.
 *** Fixed
-    - Fixed bug when promote/demote headings when it contain lists. (merges #239)
+    - Tree promoting/demoting no longer destroy list/checkbox structure. (closes #217)
+    - Fixed bug when promote/demote headings when it contain lists. (merges
+      #239, partly fixed #217)
     - Silenced =W18= warning when non-ASCII coded TODO keywords are used. (merges #236)
     - Fix non-English locale support issue in OrgDate and Agenda. (merges #234,
       closes #230)