Version 1.0 * First version of inTrees. Version 1.1 * add typeDecay in pruneSingleRule (relative error increase or error increase) * revise the simulate data function (team optimization data) Version 1.2 * add support for xgboost * add rounding option for rule extraction * mute Apriori function when generating frequent patterns * Xin Guan and Vadim Khotilovich contributed to this release