v0.2.0

Changed

• make release now creates the matching GitHub Release automatically
  (gh release create) after pushing the tag, using that version's
  CHANGELOG.md section as the release notes (extracted with awk).
  Previously the target only pushed the tag, so the Releases page drifted
  behind the tags and published images — v0.1.2 had a tag and images but no
  Release object until it was created after the fact.

Documentation

• Refreshed the Docker badges and image pull instructions in the README.