[osis-core] Proposed works syntax

[Harry Plantinga]

> I think what is also unclear to me is why user's should be able to or 
> able to avoid doing author/title/publisher/etc.?
> 
> Either they want to specify a reference system (some of which will be 
> predefined with that sort of information) or not. If someone is going 
> outside a defined set, I don't understand the reluctance to force them 
> to provide some minimal information about it. (I may be mis-reading your 
> post completely  so please correct if I have run off into the weeds.)

I want an easy way to say lxx:Ps.42.3 (for a pre-defined scheme such
as bible.lxx) without knowing author, title, publisher, etc.

If my work has lots of references to Aquinas' Summa, I might want to
make reference to a pre-defined scheme (summa:q135.3) without
defining a particular author, title, edition, etc.

I.e. I want an easy way to use one of the pre-defined systems.

-Harry