CHANGELOG entry for IDNA values

CHANGELOG.md

@@ -11,6 +11,8 @@
   decoded form. Both forms should be accepted in command line arguments.
   Providers may need to be updated to display the decoded form in their logs,
   until then they'd display the IDNA version.
+* IDNA value support for Record types that hold FQDNs: ALIAS, CNAME, DNAME, PTR,
+  MX, NS, and SRV.
 * Support for configuring global processors that apply to all zones with
   `manager.processors`