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File: src/include/optionparser.h  src/include/optionparserimpl.h
Copyright (c) 2012 Matthias S. Benkmann
License: MIT
Origin: https://sourceforge.net/projects/optionparser/

Modifications (c) 2020 Christof Kaufmann:
- Major additions and modifications to the original optionparser code


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File: src/include/* src/src/* src/utils/*
Copyright (c) 2016-2020 Hochschule Bochum
License: BSD-3
Origin: No public repository
Modifications (c) 2020 Johannes Mast:
- Removed or commented code that is not necessary for the implementation in R
- Removed calls to std::cerr or std::cout with calls to Rcpp::Rcerr or Rcpp::Rcout to comply with cran policy.