[s0l0ist]

Hey that's me! Thanks for mentioning it.

So far it has automatic layout that will position (and create a rendering) for hierarchical graphs - even if your data isn't hierarchical in nature. This is how the algorithm works internally as it is a reflection of Dagrejs.

I plan to support more layout types in the future.

As for placement of 'root' nodes (aka source and sink nodes) - in reference to the parent comment - my hope is to expose graph theory methods that you can run before layout/render which would help facilitate this automatically, but it's non-trivial to codify as it requires a substantial refactor to the layout algorithm(s).