Changes in version 1.2.0 (2017-02-27)                  

  - Implemented ensemble selection to construct an ensemble of models in
    the output of gbts().

  - Revised the API of gbts() to simplify the specification of minimum
    and maximum values of hyperparameters.

  - Improved the display of optimization progress.

  - Terminated support for the R package "xgboost".

                 Changes in version 1.0.1 (2016-10-17)                  

  - Modified access to gbm predict() to be compatible with the current
    and next version of gbm.

  - Revised the documentation of gbts() and the DESCRIPTION file to
    describe Bayesian optimization in replacement of active learning.
    This is merely a documentation change for the same algorithm.

  - Allowed the "srch" argument of gbts() to accept "bayes" for Bayesian
    optimization.

  - Revised the description of the "cutoff" argument of gbts().

  - Changed R (>= 3.3.1) in the DESCRIPTION file to R (>= 3.3.0) to
    address the installation error from OS X on CRAN, which uses R
    version 3.3.0 at the time.

                 Changes in version 1.0.0 (2016-10-08)                  

  - This is the initial release.