[Gretl-announce] grel 2026d released

See https://gretl.sourceforge.net/ This is primarily a bug-fix release. Shortly after putting out gretl 2026c we noticed a nasty newly-introduced bug -- a crash triggered as follows: estimate a VAR via the gretl GUI, pull down the Analysis menu in the VAR output window, select Forecast, then select a specific series. Here's the change log: 2026-10-29 version 2026d - Fix bug: potential crash when forecasting based on a VAR estimated in the GUI - Fix bug: the "must-assign" attribute of packaged functions was not being registered in the function-package GUI - Fix bug: potential crash in the deseas() function on getting an error from X-13ARIMA-SEATS - Fix bug: missing data in the updated AWM macro dataset - L-BFGS-B: the code (originally translated from Fortran via f2c) has been rewritten in idiomatic C - L-BFGS-B: more robust handling of a criterion that is undefined at some points: back off on encountering a non-finite criterion or gradient, rather than terminating - L-BFGS-B: never evaluate the criterion outside of the specified bounds (one-sided numerical derivatives at a bound; guard against rounding error in the line search) - fix bug: BFGSmin, BFGSmax, BFGScmin, BFGScmax, NRmin and NRmax could return a criterion value that did not correspond exactly to the final parameter vector - Delete some unused variables flagged by clang - markdown formatter: handle bulleted lists not preceded by a blank line - macOS: add installer packages for gretl_edit - PairPlot addon: upgrade to PDF documentation -- Allin Cottrell Professor Emeritus of Economics Wake Forest University, NC