There is a backup / restore feature, look in the menu in the "main window" (account list).
It backs up account and folder settings, and app settings to a local file.
Then you can copy the file to the new device, and restore the settings there.
I agree that doing 1) automatic 2) cloud based backup would be a nice idea.
I can't use Android's built-in app data backup, because its use policy specifically prohibits storing account logins and passwords.