TODO:

This is a brief list of the things that may still need to be done. No guarantee
of them ever getting done.

* Add proper support for Financial, Funnel, and Gantt charts
* Provide a better API for developers
* Add onclick javascript events to the bars (allowing drill-down graphs)
* Add trendline support
* Add more sample graphs (eg reading from the site statistics tables).
* PGSQL support

