add contracts to location-formatting functions,
and make sure those functions convert their inputs to strings,
and fix a documentation bug in `techrpt-location`
Handle comma-separated Last,First and Last,Jr,First format for names in bibtex, as well as "von", "de la", "van de", and other separators that start with lowercase letters
These commands work like natbib's citeauthor and citeyear commands,
and facilities making possessive citations. For example:
> Thanks to @(cite-author foo)'s (@(cite-year foo)) paper on stuff...
These identifiers are added with `define-cite` as keywords, and thus
can be omitted with no downside for backwards compatibility.
@(define-cite cite citet generate-bib
#:cite-author cite-author
#:cite-year cite-year)
Also in this commit:
* Add documentation.
* Add tests for autobib
* Bump version and add history.
The function bound to `make-my-notes` by `define-footnote` (as in:
```
(define-footnote my-note make-my-notes)
```
) now produces a part with the `unnumbered` style.
This way, footnote sections can go between any two sections on a page
without upsetting the section numbers.
