Increment version number to 1.1.4

Increment version number to 1.1.3

add skip on CRAN for discretize_xgboost

Increment version number to 1.1.1

shorten execution time for step_discretize_xgb()

add missing skip_on_cran()

Increment version number to 0.2.0

version bumps for release (#101)

notes on installations

version bump amd updates