Bibliographic data

[johnbrown-IF]

Add the ability to specify the fields defined by The Treaty of Babel: genre, publication date, forgiveness rating, etc. This has already been partially implemented, but we can continue moving in this direction.

[dstelzer]

I believe this will only matter for the zblorb format, right? I don't think the Å-machine uses ifiction records currently (though it could in the future), and raw z5s and z8s don't have any place to put this.

I agree it makes sense to allow it for zblorbs, though. "Language" in particular is a good thing to specify.