Two new taper (extrusion) cross sections were added to TaperMaker: right trapezoid and quadrilateral.
To create tapers using these cross sections, you must select two paths (rather than just one). The base of the cross section will follow between the selected paths, and the width of the base will vary with the distance between the paths.
Here is an example of some tapered right trapezoids:
A demonstration video (3:20) is available at: http://youtu.be/4Erlpw22F7o
You can download the plugins from: http://www.drawmetal.com/download

