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

Version 1.4
* fix check Note: Argument items with no description in Rd file 'selectRuleRRF.Rd':‘target’