Include the subtitle, the revision number, date, and remark on title page (if defined)

[ggrossetie]

API

• https://asciidoctor.github.io/asciidoctor.js/master/#documentgetrevisionnumber
• https://asciidoctor.github.io/asciidoctor.js/master/#documentgetrevisiondate
• https://asciidoctor.github.io/asciidoctor.js/master/#documentgetrevisionremark
• https://asciidoctor.github.io/asciidoctor.js/master/#documentgettitle

var doctitle = doc.getDocumentTitle({ partition: true })
console.log(doctitle.getMain())
console.log(doctitle.getSubtitle())
console.log(doctitle.hasSubtitle())