1.4.2

🔄 An update that actually looks updated

The previous release stopped the dashboard from coming back with old files
after you click update. This one closes the other way in, and gives a fresh
install its own notes.

🐛 Fixes

• The dashboard could still come up with the previous release's stylesheet.
  Clicking update reloads the page, and that was enough. Updating from a
  terminal and then simply returning to the tab was not: nothing revalidated,
  and the browser served whatever it already had, which is how a new version
  can render with no styling at all. Apache now marks index.html and the
  language dictionaries as needing revalidation, and the stylesheet and the
  script carry the version in their address, so an update is never half old
  and half new.

✨ Polish

• A fresh install ships the release notes. The what's new button reads them
  from disk, in the language you picked, instead of falling back to English
  from GitHub.
• The installer enables mod_headers, and the configuration still works
  without it, just with no revalidation.