Storage credentials and other text values in the JSON configuration file of the NetCDF Kerchunk index can now contain template variables of the form "$ENV" or "${ENV}". Such references will be replaced by the corresponding value of the environment variable named ENV.
nckcidx describe supports a --json flag for JSON output.
Requires approval of #14
"$ENV"or"${ENV}". Such references will be replaced by the corresponding value of the environment variable namedENV.nckcidx describesupports a--jsonflag for JSON output.Closes #6