Changes in version 1.4.1 (2025-02-12)                  

  - Updated .Rbuildignore to make sure LICENSE.md is included in the
    package tarball (.tar.gz).

                 Changes in version 1.4.0 (2024-09-10)                  

  - Updated maintainer's email address.

  - Fixed the NOTEs in CRAN checks.

  - Added MIT License file (LICENSE.md).

  - Updated testing codes in the testthat folder.

  - A minor update in the FastMmLHD function.

                 Changes in version 1.3.3 (2021-07-31)                  

  - Updated the LaPSO function: the exchanging logic has been updated to
    provide more accurate results.

                 Changes in version 1.3.2 (2021-04-05)                  

  - The exchange function was updated and now it is capable of
    exchanging elements either column-wise or row-wise.

  - The DESCRIPTION file, documentations (.Rd files), vignettes, and
    test files were updated accordingly.

                 Changes in version 1.3.1 (2020-11-18)                  

  - The following five functions were re-named to avoid confusions:
    OLHD1998, OLHD2001, OLHD2007, OLHD2009, and OLHD2010.
    
      - OLHD1998 now is called OLHD.Y1998.
      - OLHD2001 now is called OLHD.B2001.
      - OLHD2007 now is called OLHD.C2007.
      - OLHD2009 now is called OLHD.L2009.
      - OLHD2010 now is called OLHD.S2010.

  - Functions LOO, LPWT, and MWT are integrated into function FastMmLHD.

  - The DESCRIPTION file, documentations (.Rd files), vignettes, and
    test files were updated accordingly.
    
      - Documentations were updated to provide recommendations to new
        users on how to set input arguments properly.

                 Changes in version 1.3.0 (2020-11-09)                  

  - Part I - We added the following four functions: OLHD2001, OLHD2007,
    OLHD2009, and OLHD2010.
    
      - These new functions are construction methods for orthogonal
        LHDs.

  - Part II - The DESCRIPTION file, documentations (.Rd files),
    vignettes, and test files were updated accordingly.

                 Changes in version 1.2.0 (2020-09-17)                  

  - Part I - We added the following six functions: FastMmLHD, GLP, LOO,
    LPWT, MWT, OLHD1998, and WT.
    
      - OLHD1998 is a construction method for generating orthogonal
        LHDs. The rest functions are construction methods for maximin
        distance LHDs under L_1 distance.

  - Part II - We updated all the existing functions:
    
      - To be more informative, the documentations of all the existing
        functions have been updated.
    
      - A new input argument, maxtime, was added for each of the
        following algorithm functions: SA, OASA, SA2008, SLHD, LaPSO,
        and GA. Now users can define a maximum CPU time using that input
        argument. In addition, a progress bar will show up in the R
        console to inform users the overall progress.

  - Part III - The DESCRIPTION file, documentations (.Rd files),
    vignettes, and test files were updated accordingly.

                 Changes in version 1.1.0 (2020-06-02)                  

  - Part I - We added the following three optimality criteria functions:
    
      - Average absolute correlation (function name: AvgAbsCor)
    
      - Maximum absolute correlation (function name: MaxAbsCor)
    
      - Maximum projection criterion (function name: MaxProCriterion)

  - Part II - We updated the following functions: SA, OA2LHD, OASA,
    SA2008, SLHD, LaPSO, and GA.
    
      - SA, OASA, SA2008, SLHD, LaPSO, and GA will be able to generate
        maximin distance LHDs, maximum projection LHDs, and nearly
        orthogonal LHDs from now on, while they can only generate
        maximin distance LHDs in the past.
    
      - For OA2LHD, users no longer need to provide the parameters of
        input Orthogonal Array. The function itself will take care of
        that.
    
      - The majority of input arguments now have default settings. For
        users who seek instant design matrix or quick search, simply
        input run sizes and factor sizes would be enough. This
        modification saves times for users.

  - Part III - The DESCRIPTION file, documentations (.Rd files),
    vignettes, and test files were updated accordingly.

                 Changes in version 0.1.3 (2020-04-14)                  

  - Updated the SLHD function: the exchanging logic in Stage II has been
    updated.

                 Changes in version 0.1.2 (2019-10-22)                  

  - The following functions have been updated: SA, OASA, SA2008, SLHD,
    GA, and LaPSO. -The default input argument p used to be 50, and now
    is set to be 15.

  - Correspondingly, documentations (.Rd files), vignettes, and test
    files were updated.

  - This update also fixed the errors from the CRAN Package Check
    Results.

                 Changes in version 0.1.1 (2019-10-14)                  

  - The Description field of DESCRIPTION file has been updated.