Changes in version 1.1.0 (2024-07-29)                  

  - Fixed a bug when triples matching within very small strata (only one
    treated or one control individual)
  - Fixed a bug in make_bal_tab() when not all treated units are
    matched. Note that the new value of the function has one additional
    column for the mean of the matched treated units.
  - Minor updates to error messages and documentation

                 Changes in version 1.0.0 (2023-10-23)                  

  - Added a NEWS.md file to track changes to the package.