[postmodern-devel] Release 1.17

[Marijn Haverbeke]

Most users are probably already using the git HEAD (which is pretty
safe, since I don't push many wild experimental patches), but I just
released a new version. The important changes are:

* Fixes day-of-week in simple-date.
* Makes the :plist query format actually work.
* Adds sql-escape as an exported symbol for client code that needs to
escape stuff.
* Adds support for multi-dimensional arrays.
* Adds the *ignore-unknown-columns* configuration variable.

Cheers,
Marijn