Testing Locally:
asdf plugin-test spago https://github.com/nsaunders/spago [--asdf-tool-version <version>] [--asdf-plugin-gitref <git-ref>] [test-command*]
#
asdf plugin-test spago https://github.com/nsaunders/asdf-spago.git "spago --help"
Tests are automatically run in GitHub Actions on push and PR.