This looks great, but sequence diagrams are one of the things I use most with PlantUML. Most commonly I find these super useful to document various caching scenarios, and I use them all the time to help explain payment processing flows.

https://text-to-diagram.com/ says the sequence diagrams aren't supported, but your github description says

> D2 intends to integrate with a variety of layout engines, e.g. dot, as well as single-purpose layout types like sequence diagrams. You can choose whichever layout engine you like and works best for the diagram you're making.

Can you explain a bit more about this, if I wanted to create a sequence diagram with D2 today is there a simple path to follow to do this?

Thanks for the work on the project!