Merge pull request #53 from lincolnloop/fix-6.1.1

Fix regression in #51

Merge pull request #52 from lincolnloop/bump-action-version

Bump action version

Merge pull request #51 from lincolnloop/43-initial-kwarg

Support `initial` kwarg in `goodconf.Field`

version 5.0.0

* Use GitHub Actions to release to PyPI