Organize section content under nested taxonomy

[Mikhail]

Multi-level taxonomy

It would be nice to have a multi-level taxonomy. For example. config.yaml taxonomies: category: "categories" person: "persons" annotator: "annotators" author: "authors" recipient: "recipients" And if I have in the front matter authors: John Smith, John Smith will automatically be added to the list of the taxonomy person. I know that this can be done by adding person: in the front matter, but the hierarchy would be more convenient.