Changes in version 0.3.0 (2023-09-22)                  

  - Added the new function exactmed_cat(), which computes mediation
    effects when the mediator is categorical.

  - In exactmed_c() when used with case-control data, the residual mean
    square error (MSE) has been replaced by the weighted MSE as the
    estimator of the error variance ($\sigma^2$) of the mediator
    regression model.

  - Documentation fixes and updates.

                 Changes in version 0.2.0 (2023-03-19)                  

  - Added the new function exactmed_c(), which computes mediation
    effects when the mediator is continuous.

  - The function exactmed() can now calculate mediation effects with
    case-control data. The case-control functionality is also available
    with the function exactmed_c().

  - Added print() methods for correct display of output objects.

  - Documentation fixes and updates.

                 Changes in version 0.1.0 (2022-03-09)