Show HN: GUI for editing Mermaid class diagrams

Any idea when Mermaid diagrams will render outside of web browsers?

https://github.com/mermaid-js/mermaid/issues/2485

<rant> Aside, I'm the author of KeenWrite (https://keenwrite.com/), a Markdown text editor that allows embedding diagrams using the triple-backtick syntax. Here's a GraphViz example:

    ``` diagram-graphviz
    digraph {
        rankdir="LR";
        a -> b -> c;
    }
    ```

KeenWrite parses the `diagram-` prefix then passes the word `graphviz` to Kroki (https://kroki.io/), which has an API for rendering a variety of ASCII diagrams, including Mermaid. Meaning, if Kroki adds a new diagram type, KeenWrite gets it for free (without modification).

In Markdown, formatting a source code snippet entails using the standard syntax for code blocks:

    ``` graphviz
    digraph {
        rankdir="LR"
        a -> b -> c;
    }
    ```

GitHub created a de facto standard for Mermaid diagrams that breaks the convention of having triple-backticks followed by a language identifier to show the source code for that language in a monospace font. This was an unfortunate decision. </rant>