indicator: Tidy Statistical Indicators

#' indicators: A package to create tidy indicators.
#'
#' The foo package provides three categories of important functions:
#' Data acquisition functions, approximation functions, and database functions.
#'
#' @section acquisition functions:
#' The data acquisition functions download raw indicators from various open data sources.
#'
#' @section approximation functions:
#' The approximation functions fill in missing values in times series or longitudinal with
#' linear approximation, the last observation carry forward or the next observation carry backwards
#' methods.
#'
#' @section database functions:
#' The database functions assemble the metadata and data tables of various indicators into a SQlite database.
#'
#' @section metadata functions:
#' The metadata function update the metadata tables.
#'
#' @section visualisation functions:
#' The visualisation function help to provide consistent visualisation (for example, colors) in an observatory.
#'
#' @section data files:
#'
#' @docType package
#' @name indicators
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