Changes in version 1.9.3.9000                      

                 Changes in version 1.9.2 (2021-08-09)                  

  - Added rmarkdown package to suggests at request of CRAN

                 Changes in version 1.9.1 (2018-11-07)                  

  - Fixes for rlang 0.3 compatibility (#156, #159).

                 Changes in version 1.9.0 (2018-08-27)                  

  - Add input checking to exported functions (#150).

  - input_fn.list() no longer performs type coercion on numpy arrays.

  - Added boosted_trees_regressors() and boosted_trees_classifier()
    (#146).