Ask HN: Good Asciidoc editor for OS X?

I'm working on a book, and the publisher suggested formatting it in AsciiDoc. I'm using Asciidoc-VSCode [0], which has nice live preview but some features don't have correct previews, and I'm missing an outline view, spellcheck, etc. What Asciidoc editor does HN recommend? [0] https://github.com/joaompinto/asciidoctor-vscode