markdown-it-sub 1.0.1

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# markdown-it-sub.rs

A [`markdown-it`](https://crates.io/crates/markdown-it) plugin to process subscript.

To load the plugin:

```rust
let mut parser = markdown_it::MarkdownIt::new();
markdown_it::plugins::cmark::add(&mut parser);

markdown_it_sub::add(&mut parser);

let html = parser.parse("log~2~(a)").xrender();
assert_eq!(html, "<p>log<sub>2</sub>(a)</p>\n");
```