Add fix for CR/LF rejection in IMAP quoteMailboxName

diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 9cf14c9..804c4f1 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml

@@ -64,6 +64,7 @@
     <release version="3.13.1" date="YYYY-MM-DD" description="This is a feature and maintenance release. Java 8 or later is required.">
       <!-- FIX -->
       <action type="fix" dev="ggregory" due-to="Javid Khan, Gary Gregory">Reject CR/LF in SimpleSMTPHeader and SimpleNNTPHeader fields #397.</action>
+      <action type="fix" dev="sebb" due-to="Javid Khan">Reject CR/LF in IMAP quoteMailboxName (#399).</action>
       <!-- ADD -->
       <!-- UPDATE -->
       <action type="update" dev="ggregory" due-to="Gary Gregory">Bump org.apache.commons:commons-parent from 97 to 102.</action>