Changes in version 0.2.1 (2023-11-29)                  

  - Use string literals when calling R internal function error() for
    error messaging.

                 Changes in version 0.2.0 (2018-08-21)                  

  - Makes defaults and error messages friendlier with discrete
    covariates

                 Changes in version 0.1.1 (2018-07-26)                  

  - Updates R dependency.

                 Changes in version 0.1.0 (2017-07-31)                  

  - Initial release.