Changes in version 1.11 (2025-05-21)                  

  - corrected some issues in est.tpt function

  - corrected some issues in est.tpt function
  - functions dbtpn, dfts, dstpn, dtpn, dtpt, dutpn, pbtpn, pfts, pstpn,
    ptpn, ptpt, putpn, qbtpn, qfts, qstpn, qtpn, qtpt, qutpn, rbtpn,
    rfts, rstpn, rtpn, rtpt and dutpn allow the use of a sigma vector.

                  Changes in version 1.10 (2025-04-05)                  

  - est.tpt function provided the estimation for in regression case

                  Changes in version 1.9 (2024-11-17)                   

  - functions dtpt, ptpt, rtpt and est.tpt are included

                  Changes in version 1.8 (2023-12-11)                   

  - corrected some issues in est.uptn function

                  Changes in version 1.7 (2023-09-27)                   

  - included type 3 and 4 for utpn model
  - est.utpn function provided the estimation for sigma instead of the
    regression coefficients when no covariates are avaliable

                  Changes in version 1.6 (2023-08-09)                   

  - functions dftp, pftp, qftp, rftp, est.ftp and choose.ftp were
    changed to dfts, pfts, qfts, rfts, est.fts and choose.fts,
    respectively
  - corrected computation of AIC and BIC for est.utpn function

                  Changes in version 1.5 (2023-07-16)                   

  - fixed error in est.utpn function

                  Changes in version 1.4 (2023-07-13)                   

  - functions dutpn, putpn, qutpn, rutpn and est.utpn are included

                  Changes in version 1.3 (2022-05-14)                   

  - functions dftpn, pftpn, qftpn, rftpn and est.ftpn were changed to
    dftp, pftp, qftp, rftp
  - function choose.ftp was included
  - probability density function was included with latex format for all
    the models

                  Changes in version 1.2 (2022-04-01)                   

  - functions dftpn, pftpn, qftpn, rftpn and est.ftpn are included

                  Changes in version 1.1 (2021-10-13)                   

  - functions dbtpn, pbtpn, rbtpn and est.btpn are included
  - solve2 from skewMLRM instead of solve is used to perform the matrix
    inversions