Prior to this changeset, calling RDatasets.datasets("package") would
return a DataFrame with only a single row if "package" was found (even
if there were more datasets in the package) or raise an error if
"package" was not found. This change fixes the regression; all datasets
are now returned when "package" is found and an empty DataFrame is
returned if "package" is not found.
Prior to this changeset, calling RDatasets.datasets("package") would return a DataFrame with only a single row if "package" was found (even if there were more datasets in the package) or raise an error if "package" was not found. This change fixes the regression; all datasets are now returned when "package" is found and an empty DataFrame is returned if "package" is not found.