GEMATariff: Calculate GEMA tariffs

#' Calculate GEMA tariffs.
#'
#' \tabular{ll}{
#' Package: \tab GEMATariff\cr
#' Type: \tab Package\cr
#' Version: \tab 0.01-0\cr
#' Date: \tab 2016-09-24\cr
#' Depends: \tab R (>= 2.9.0),methods\cr
#' Encoding: \tab UTF-8\cr
#' License: \tab AGPL (>= 3)\cr
#' LazyLoad: \tab yes\cr
#' URL: \tab https://www.c3s.cc\cr
#' }
#'
#' This R package was developed to get a better understanding of the tariff system of the
#' German collective rights society GEMA. It is intended to be useful as a research tool, and
#' not for any practical application beyond that. Some of the tariffs are quite complex.
#' Allthough we implemented everything to the best of our abilities, we do not warranty the
#' correctness of these calculations. Also, the tariffs are constantly subject to change, and while
#' you read this, some of these changes might not have been implemented yet. If you need
#' reliable feed back on these tariffs, you should try the official GEMA online calculator
#' (https://online.gema.de/aidaos/) instead.
#'
#' @aliases GEMATariff-package
#' @name GEMATariff-package
#' @docType package
#' @title The GEMATariff Package
#' @author m.eik michalke
#' @keywords package
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