[data/C/books-and-ebooks/0002-fedora-defensive-coding.json] date field isn't applied from the JSON file to the README.md

After running src/compiler.php the date is ignored:

$ grep -r date data/C/books-and-ebooks/0002-fedora-defensive-coding.json 
    "date": "2012",

README.md:
- Defensive Coding: A Guide to Improving Software Security by the Fedora Security Team (2018)
- Defensive Coding: A Guide to Improving Software Security by the Fedora Security Team (2019)

src/Util.php:

    if (!empty($fd['date'])) {
        $dt = new \DateTime($fd['date']);
        $header .= ' ('.$dt->format('Y').')';
    }

DateTime:

Instead of just using the year, it seems working when date matches the pattern "YYYY-MM"

paragonie / awesome-appsec