v0.98.10

Fixed

• Releases now publish with notes. Every release page up to v0.98.9 carried the
  three binaries and an empty body: the workflow only ever uploaded artifacts,
  so the file that says what changed never reached the place people read before
  upgrading. release.yml now takes this tag's section out of CHANGELOG.md
  and fails the publish if that section is missing, rather than shipping
  another blank one.
• Restored the version links at the foot of this file. They stopped being
  maintained after 0.96.0, leaving 136 of 173 version headings as plain
  bracketed text that linked nowhere.