While this is a fun project for JAMstack there are some limitations.
- Multiple authors are possible but the latest edit becomes your published date.
- The edits and updates can be tracked in Trello to check if point 1 happens.
- Acknowledge you are using Trello for experiment/fun.
This demo shows how Sapper could be used for any headless CMS or other API solutions even Shopify has a headless mode.
This demo is also hosted here https://trello.anoram.com/
Check the repo here: https://github.com/peopledrivemecrazy/Sapper-Trello