testpackage: Example package for ANTHRBIO 561 FA 2019

#' UFO sighting data from 1969 to 2068
#'
#' A dataset containing data on historical UFO sightings
#'
#' @format A data frame with 102240 rows and 8 variables:
#' \describe{
#'   \item{date}{date of sighting}
#'   \item{date_time}{date and time of sighting, if time available}
#'   \item{city}{city}
#'   \item{state}{state}
#'   \item{shape}{shape}
#'   \item{duration}{duration of encounter}
#'   \item{summary}{written description}
#'   \item{posted}{when added to database}
#' }
#' @source \url{http://www.nuforc.org/}
"ufo"