- open_browser detached command

- __mdopen_assets variable from CLI
- dark/light themes from CLI: `mdopen --theme github-dark`

- href="style.css" and `<style>` in templates (useful for exporting with inlined css)
- use as library, like grip;
- export to file

- close html page on server quit 
- github releases and release on crates.io
- minify js/css/html, add justfile

- favicon

- syntax hl in rust
- katex in rust????
- compile time feature flags

- reload only document.innerHTML

- man page
- bash_completion

- pretty_env_logger, cool output like miniserve

- base directory

- add README.md to directory view
