Bumping to Houdini Version: 13.0.423
Houdini Engine Version: 1.7 (API: 14)
Replaced HAPI_GetMaterial() with HAPI_GetMaterialOnPart() and added stub for HAPI_GetMaterialOnGroup(). The reason for this is because of the recent addition of the option to not split geos into parts by group - meaning you can now have multiple materials on a single part.
Minor fix to a bug that would skip all parameters after an empty folder parameter and not draw them.