The estat() gets the meta-information of a statistical table by using getMetaInfo of the 'e-Stat' API,
and returns an estat object that allows editing of meta-information by dplyr::filter() and dplyr::select().
Examples
if (FALSE) { # \dontrun{
Sys.setenv(ESTAT_API_KEY = "Your API key")
estat("https://www.e-stat.go.jp/dbview?sid=0003433219")
} # }
