A really great and innovative idea.

However, it looks like the project's website bit the dust a couple of years ago. I found the original github project via their dead website via archive.org:

https://github.com/neatnik/icywallet

Sadly, that's gone too...

The github link you gave looks like a fork from the original project (above) - it doesn't seem to have any releases.

On the positive, it does seem to show just what's possible.

Hope it (or another such project) pulls through.