[chishaku]

Check out mermaid [0] for plain text diagramming that's easily version controlled.

It's also natively rendered in obsidian [1] without any plugins.

Not affiliated, just very happy with this plain text and local workflow.

[0]: https://mermaid-js.github.io [1]: https://obsidian.md/

[bjtitus]

Mermaid rendering is also hopefully coming to Github soon (Q1 - 2022). https://github.com/github/roadmap/issues/372