Changes in version 0.2.0 (2021-06-01)                  

  - Updated the function plot.mixfitEM()
  - Updated the function density.mixfitEM()
  - Corrected the function to_k_lambda_weibull()
  - Solved the NA issue in the output of mixfit() (NaN still happens
    when EM algorithm fails to converge)
  - Added a vignette
  - Added tests

                 Changes in version 0.1.1 (2018-06-07)                  

  - Resolved the warnings issues found in check results.

                 Changes in version 0.1.0 (2017-02-25)                  

  - First version