Changes in version 1.1.1 (2026-02-03)                  

  - Updated author email and citations.

                 Changes in version 1.1.0 (2023-04-18)                  

  - Added a couple more possible elements to the options argument to the
    refine function. These are minsplit for the minimum number of
    treated or control units to allow in a split stratum and threads for
    the number of threads to use in the optimization.
  - Changed the value of details$valueLP to NA if the integer program
    was solved instead of giving the same value as details$valueIP.

                 Changes in version 1.0.0 (2022-11-08)                  

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