Changes in version 0.2.2.9000                      

                 Changes in version 0.2.2 (2025-07-18)                  

  - update plot_bivariate() to depend on ggh4x to remove empty panels,
    instead of a grob (such that it remains a ggplot) object
  - update link in readme

                 Changes in version 0.2.1 (2025-06-18)                  

  - patch test files to work with the new upcoming ggplot release
  - update link readme

                 Changes in version 0.2.0 (2025-05-19)                  

  - First CRAN release of the densityratio package.
  - Estimation methods kliep(), kmm(), lhss(), naive(), spectral(),
    ulsif().
  - Cross-validation for all methods incorporated (except naive).
  - S3 methods predict(), plot(), print() and summary() incorporated.
  - Extensive checks for input data and parameters.
  - Test files for all methods.
  - Added a NEWS.md file to track changes to the package.