Update ChangeLog wrt. last cherry-picked patches.

ChangeLog

@@ -3,6 +3,11 @@ version 1.0 -- UNRELEASED
 	rysnc:
 	 . Fix numericids option (Redmine#3691).
 	 . Mangle $rsync_options just afterwards (Redmine#3702).
+	 . Fix metadata rotation.
+	 . Allow disabling rotation or setting 2 days as minimum for backup
+	   increments in rsync short format (Redmine#2107).
+	 . Use fatal instead of custom "exit 1" (Redmine#3721).
+	 . Abort on rsync error (Redmine#3692).
 	dup:
 	 . Make the .dup generated by ninjahelper more consistent with
 	   example.dup.