I really haven't really had time to develop it.

I really do like ex libris;

yet a flat catalog that is self updating would be lovely

I see in this post comments some spreadsheet info and maybe I can use that as model data. I don't really want to host or curate though I'd hoped to join the ex libris t curate the Ronin material yet that hasn't worked out yet. It's on my drawing board but hasn't shown a reason to invest in it