Add an article

This turns a title, a date and a standfirst into the one line journal.js needs. Copying the template and writing the piece itself still happen by hand — see README-journal.md.

1. Copy article-template.html, save it under the filename shown below, and write the piece between <article> and </article>.
2. Fill in the title, date and standfirst here and press the button.
3. Paste the line it gives you into journal.js, above the entry that was newest before — newest goes first.

The filename fills in from the title — a “j-” prefix, lowercase, spaces to hyphens — but you can edit it before saving the file, as long as journal.js and the actual filename on disk still agree.