Release 0.6.0

[bollwyvl]

• merge all outstanding PRs
  • [json-schema-form] Use react-json-schema-form 5 #82
• ensure the versions have been bumped (check with doit)
• ensure the CHANGELOG is up-to-date
  • move the new release to the top of the stack
• validate on binder
• validate on ReadTheDocs
• wait for a successful build of main
• download the dist archive and unpack somewhere (maybe a fresh dist)
• create a new release through the GitHub UI
  • paste in the relevant CHANGELOG entries
  • upload the artifacts
• actually upload to npm.com, pypi.org

  cd dist
  twine upload *.tar.gz *.whl
  npm login
  npm publish deathbeds-*-$VERSION.tgz
  npm logout

• postmortem
  • handle conda-forge feedstock tasks
  • validate on binder via simplest-possible gists
  • bump to next development version
  • bump the CACHE_EPOCH
  • rebuild yarn.lock
  • update release procedures with lessons learned