- Custom HTTP headers support for HTTP checks (`--http-headers` / `-H`) [#119](https://github.com/becheran/mlc/pull/119)

- GitHub Actions usage example now documents how to pass custom HTTP headers

- Developer instructions now include pre-PR `cargo fmt` / `cargo clippy` steps [#120](https://github.com/becheran/mlc/pull/120)

- GitHub-flavored markdown task list checkboxes are no longer detected as links [#121](https://github.com/becheran/mlc/pull/121)

- Root directory configuration is validated to avoid crashes when `root-dir` does not exist