Picrust 2: linking metabolite pathways with taxa

**Is your feature request related to a problem? Please describe.**
Hello, using Picrust 2 with NAMCO I have been able to associate metabolic pathways to the different metadata categories, but not with bacterial taxa

**Describe the solution you'd like**
I think it would be great to consider adding this feature to the NAMCO Picrust 2 in the future. Thanks.
