Finally released a new version, 1.0.286, which supports Kepler's Stella Octangula (pictured here) and k-stellation. K-stellation is just a word I invented for stellation where you break down each triangular face into four parts (like a 2-frequency geodesic) and transform the middle triangle into the base of a tetrahedron. Kepler's Stella Octangula is just a K-stellated tetrahedron. K-stellation can only be done to regular polyhedra (currently).

Also note that this new version uses a different method for stellation. The percentage value (the model shown here is 100%) is the relationship between the longest pyramid edge length and the longest original face edge.