Review release artefacts

Now that the Makefile template has been reformatted, it is somewhat easier to see the differences between the workflows that produce the different release artefacts.

The following table is a synthetic view of those differences. I believe it could be useful to review those workflows and, in particular, to make sure that they match the [descriptions given in the OBOOK](https://oboacademy.github.io/obook/reference/release-artefacts/) (or that the descriptions given in the OBOOK match the workflows, depending on the side you want to see the issue from).

| | Base | Baselite | Full | Non-classified | Simple | Simple-non-classified | Basic |
|--|------|----------|------|----------------|--------|-----------------------|-------|
| Merge components | :white_check_mark: yes | :white_check_mark: yes | :white_check_mark: yes | :white_check_mark: yes | :white_check_mark: yes | :white_check_mark: yes | :white_check_mark: yes |
| Merge imports | :white_check_mark: yes | :x: no | :white_check_mark: yes | :white_check_mark: yes | :white_check_mark: yes | :x: no | :white_check_mark: yes |
| Reason | :black_square_button: optionally | :x: no | :white_check_mark: yes | :x: no | :black_square_button: optionally | :x: no | :black_square_button: optionally |
| Materialize OPs | :black_square_button: optionally | :x: no | :black_square_button: optionally | :x: no | :x: no | :x: no | :x: no |
| Relax | :white_check_mark: yes | :x: no | :white_check_mark: yes | :x: no | :white_check_mark: yes | :x: no | :white_check_mark: yes |
| Filter 1 | :x: no | :x: no | :x: no | :x: no | remove EQ axioms, filter on `simple seed`¹ **with trimming** | remove EQ axioms | remove EQ and DX axioms, all relations except BFO:0000050², filter on `simple seed` **with trimming** |
| Reduce | :black_square_button: optionally³ | :x: no | :white_check_mark: yes | :x: no | :black_square_button: optionally³ | :black_square_button: optionally⁴ | :white_check_mark: yes |
| Filter 2 | remove non-base entities **without trimming** | :x: no | :x: no | :x: no | :x: no | filter on `simple seed` **with trimming** | :x: no |
| Postprocessing | add `dc:type = IAO:8000001` ontology annotation⁵ | :x: no | :x: no | :x: no | normalize subset and synonym type declarations | :x: no | :x: no |

¹ The `simple seed` is essentially: all annotation and object properties, all subset declarations, all synonym type declarations, and all terms in the ontology’s own namespace.
² Configurable in the `keeprelations.txt` file.
³ Enabled by the same option that enables reasoning during release (`release_use_reasoner`).
⁴ In the `simple-non-classified` product, the `release_use_reasoner` option enables the reducing operation but does _not_ enable the reasoning operation.
⁵ `IAO:800001` is the “[base ontology module](http://purl.obolibrary.org/obo/IAO_8000001)” type of data entity.

Start with the reformatted Makefile template and the release workflows that produce the listed artefacts. Compare their behavior with the OBOOK release-artefacts description, including the keeprelations.txt and release_use_reasoner references. Done means the workflows and documentation agree for every artefact and discrepancy is addressed.

Written by the indexing model from the issue text.