cargo-sync-rdme 0.7.0

Cargo subcommand to synchronize README with crate documentation
# Contribution guidelines

First off, thank you for considering contributing to `cargo-sync-rdme`.

If your contribution is not straightforward, please first discuss the change you
wish to make by creating a new issue before making the change.

## Reporting issues

Before reporting an issue on the
[issue tracker](https://github.com/gifnksm/cargo-sync-rdme/issues),
please check that it has not already been reported by searching for some related
keywords.

## Pull requests

Try to do one pull request per change.

### Updating the changelog

Add your changes to the **Unreleased** section of [CHANGELOG](https://github.com/gifnksm/cargo-sync-rdme/blob/main/CHANGELOG.md).

Add the changes from your pull request to one of the following subsections,
depending on the types of changes defined by
[Keep a changelog](https://keepachangelog.com/en/1.0.0/):

- `Added` for new features.
- `Changed` for changes in existing functionality.
- `Deprecated` for soon-to-be removed features.
- `Removed` for now removed features.
- `Fixed` for any bug fixes.
- `Security` in case of vulnerabilities.

If the required subsection does not exist yet under **Unreleased**, create it!

## Developing

### Set up

This is no different than other Rust projects.

```console
git clone https://github.com/gifnksm/cargo-sync-rdme
cd cargo-sync-rdme
```

### Useful Commands

- Build and run release version:

  ```console
  cargo build --release && cargo run --release
  ```

- Run all CI checks:

  ```console
  just ci
  ```

See `just --list` for more commands.