NEWS.md
    usgas, describing the US monthly natural gas consumption by end-use on the state and US aggregate levelus_residential, us_total, and us_total, as they can be generated by the usgas datasetdigits argument from the format functionus_residential dataset, describing the US monthly natural gas residential consumption by state and aggregate levelus_total dataset, describing the US annual natural gas consumption by state and aggregate levelus_monthly dataset, describing the overall US monthly natural gas consumptionNEWS.md file to track changes to the package.