1.1

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

1.2

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

1.3

• 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