2015/11/12 remove compilation notes 2014/04/09 make a trivial modification such that 'mStep' works for single-trait analysis. 2014/01/14 changes such as default parameter values are made to improve accuracy. 2013/03/12 replace C function 'exit' with R function 'error' and C++ function 'cout' with R function 'Rprintf'. Also remove '.First.lib' and change '.onLoad' to '.onAttach'. 2011/07/03 make few modifications. 2011/06/26 resolve the hidden file copying issue in Windows.