See http://gretl.sourceforge.net/ The changelog entry: 2016-01-26 version 2016a - syntax enhancement: allow specification of type when setting a bundle member - syntax enhancement: allow specification of a null default value for a matrix argument to a user-defined function - script execution: save "compiled" loops in functions that are called repeatedly, for greater efficiency - add exists() function, recommended as a replacement for the now-deprecated isnull() - add pxnobs() function: gives the number of valid cross- sectional observations on a given series in each period - pxsum() function: revise this to skip missing values - the gretl array type: document the array() and defarray() functions - "arima" command: allow ARIMA(0,1,0) without constant - "heckit" command: allow clustered standard errors - "reset" command: add --silent option - "store" command and GUI "Export data" menu item: add option to save data in Stata's binary format (dta version 113) - "funcerr" keyword: allow use of a string variable to provide the message to be printed - Improve handling of string-valued series across sub-sampling - Improve display of string-valued series in GUI - seasonals() function: enable this for panel data when a suitable imterpretation of the time dimension has been set via "setobs" - Fix bug 196, Help button for HCCME misaligned in case of a non-MPI enabled build - Fix bug 197, invalid "xtics" specification for some weekly time-series plots caused gnuplot to abort - Fix bug: failing to detect common "missing value" strings in spreadsheet data importation via the GUI - Fix for linearize() function: don't fail when tramo finds that the input doesn't need linearizing - Fix bug: incorrectly sized object in ODBC data importation could cause a crash - Fix bug: possible crash on importing data from a Stata dta file on 32-bit Windows - Fix bug: in "hsk" the auxiliary regression should always include a constant, even if the base specification doesn't - Fix bug: South-East element of intreg Hessian was buggy (was affecting Tobit as well) - Fix bug: in GUI setting of dataset structure, the interpret- ation of stacked cross-section panel data was incorrect - Application of "catch" to user-defined functions: drop back from an error to a warning, for now - Appending daily data: don't fail when we have enough date information to succeed - Improve handling of EPS plot output (including respecting the color/mono choice properly) - Stata dta importer: support dta format 118 (Stata 14) - GUI: some cosmetic fixes specific to gtk 3 - GUI script editor: implement choice of gtksourceview style - GUI function package editor: ensure that old-style "minimum version" specification is read correctly; also ensure that appropriate line-breaks are set by the help-text editor - MS Windows package: update to OpenBLAS 0.2.16.dev to avoid bug in computing eigenvalues on 64-bit Windows - Add workaround to avoid OpenBLAS crash on matrix inversion when the input matrix contains NaNs - Remove support for gnuplot < version 4.6.0 -- Allin Cottrell Department of Economics Wake Forest University