Feature or documentation request: relational collections

[Rocketpilot]

It's been a while since I had a chance to work with this plugin and I must thank you again for putting it together.

One thing I'd like to do is to relate items in collections with other collections.

For example: "product x" in the "products" collection could link to "manufacturer x" in the "manufacturers" collection, and the latter "manufacturer x" page could list all products associated with it.

Right now the UIDs can probably make this possible but I'd like to auto-generate file names for the finished site from the titles of each entry. I did try creating a slug column in Airtable but it doesn't appear to create what I expected. Your thoughts would be welcomed!