### Features

#### Build and serve a specific page

Uses the option `--page=<file>` (alias: `-p <file>`) with the `serve` command to build and serve a specific page.

It’s useful to speed up the build when you are working on a specific page.

_Example:_

```bash
cecil serve --page=about.md
```

### Fixes

- Clear cache before build (during init phase)

### Misc

- Code cleaned
- Docs cleaned
