changelog for items having tzinfo only on dtstart or dtend set for whatever reason, overtake tzinfo from the other one

CHANGELOG.md

@@ -15,6 +15,7 @@
 * Add: [hook] dryrun: option to disable real hook action for testing, add tests for email+rabbitmq
 * Fix: storage hook path now added to DELETE, MKCOL, MKCALENDAR, MOVE, and PROPPATCH
 * Add: storage hook placeholder now supports "request" and "to_path" (MOVE only)
+* Improve: catch items having tzinfo only on dtstart or dtend set for whatever reason, overtake tzinfo from the other one
 
 ## 3.5.4
 * Improve: item filter enhanced for 3rd level supporting VALARM and honoring TRIGGER (offset or absolute)