Hi Callum,
Thanks for your hard work on this plug-in - its really helped me a lot. I've noticed its not been updated in over two years (hasn't really needed to) - but there's now some deprecation notices slipping in. I wondered if I could help maintain the plug-in, or perhaps fork it?
There are other features I would love to work on including an option for symmetric encryption for improved security. It would be great to contribute back to this plug-in.
Please let me know if this would interest you, or contact me via: stephenharris.info/contact. If I don't hear from you I'll assume you've moved on to other things, in which case I'll start a fork on GitHub.
Regardless, thank you for the plug-in!