See http://gretl.sourceforge.net/ 2018-12-21 version 2018d - Internal representation of missing values: switch to using NaN - Internal speed-ups for matrix reads and writes - Add new function, atan2(), as per the C function of the same name - Add new function isocountry(): maps between the various designations for countries (full name and codes) in the ISO 3166 standard - Add new function hyp2f1(): Gauss hypergeometric function - cdemean() function: add option to standardize in addition to centering - boxcox() function: accept a matrix argument - psdroot() function: add option to check for positive semidefinite status of matrix argument - cdf() function: add support for logistic (code "lgt") - "install" command: replace with new "pkg" command (but the old form still works until further notice) - "levinlin" command: add a --verbose option and fix some bugs - "arima" command with --x-12-arima option: enable the $vcv accessor - "dpanel" command: add --keep-extra option to enable access to the GMM weights and instrument matrices after estimation - Native arima: improve the scaling of dependent series when necessary - Line plots via gnuplot: show gaps for missing values - dbnomics: some refinements to handle problematic cases as well as some new functionality - Matrix power (A^k): support fractional and negative powers for positive-definite matrices - Fix bug: out-of-bounds writes to matrices were not being caught under all conditions - Fix bug: giving an all-zero initializer to "arima" could result in a crash - Fix bug: the $ylist accessor was giving the wrong series ID in the case of "arima" - Fix bug: VECM forecast failing in some cases - Fix bug: panel plot, boxplots by group, was failing when the sample range begins at a positive offset - Fix bug: "bundle-plot" mechanism for function packages in the GUI broken after the first invocation - "mle": drop the requirement that a dataset is in place - "foreign": support the changes in Julia version 1.0 - Windows: improve handling of non-ASCII filenames, including names not representable in the 8-bit code page - Windows and Mac packages: update to gmp 6.1.2, mpfr 4.0.1 -- Allin Cottrell Department of Economics Wake Forest University