Pikchr - Diagram renderer

Taken from the pikchr homepage:

Pikchr (pronounced like "picture") is a [PIC][1]-like markup language for diagrams in technical documentation. Pikchr is designed to be embedded in [fenced code blocks][2] of Markdown (or in similar mechanisms in other markup languages) to provide a convenient means of showing diagrams.

[1]: https://en.wikipedia.org/wiki/Pic_language [2]: https://spec.commonmark.org/0.29/#fenced-code-blocks

This crate wrappers the pikchr.c version downloaded from that website on the 23rd August 2023.

You can use it as follows:

```rust use pikchr::{Pikchr, PikchrFlags};

let piccy = Pikchr::render( diagram_str, None, PikchrFlags::default()).unwrap();

println!("{}", piccy); ```

There is a little helper program that reads a Pikchr file named on the command line and renders it as SVG to the standard output:

~~~sh cargo run -p pikchr-cli -q foo.pikchr > foo.svg ~~~

You can install it with cargo install pikchr-cli (cargo install --path=pikchr-cli from the source tree).