xlsgen 4.9 is coming and the theme for this next major release is developer friendliness.

More than half of the features are actually meant to make existing tasks easier to write and use, such as PDF engine improvements, chart rendering improvements, HTML markup improvements, and so on. Over the next few days, we'll be previewing details.

And also new features such as the introduction of multithreaded calculations, SVG chart export and so on.