Dear All,

the attached patch adds support for three new citation styles which
recently got supported by citeproc-el:

- cite/title or cite/ti to cite only the title of an item,
- cite/locators or cite/l to cite only the locators, and
- cite/bibentry or cite/b to cite the full bibliography entry.

I put "RFC" in the subject because I'm not entirely sure about naming
the "bibentry" style, since "bibentry" is natbib terminology, I think,
and biblatex's corresponding command is \fullcite, but I find
"bibentry" slightly more adequate. Also, do we need the "ti"
abbreviation for the "title" style?

thanks and best wishes,
András