I agree that it appears the developers are calling it quits. If you look at the diff itself, they have replaced large chunks of logic with an abort routine, pas

I agree that it appears the developers are calling it quits. If you look at the diff itself, they have replaced large chunks of logic with an abort routine, passing the message "Insecure App". This does not explicitly suggest vulnerabilities exist in older versions, but rather the latest version with these changes is very explicitly insecure and should not be used. This does leave room for issues to have been discovered in old versions - maybe rather than fix, they are throwing in the towel.