For the full log of gretl changes since January 2000, see
<@url="http://gretl.sourceforge.net/ChangeLog.html">.

2020-11-21 version 2020e
- New function tdisagg() for temporal disaggregation
  (distribution and interpolation)
- New addon package "regls": supports LASSO, Ridge regression
  and Elastic net
- New function assert() for debugging purposes
- MPI: update documentation and support transfer of more
  data types
- kdensity() function: generalize to allow as argument a
  list or matrix with more than one column
- "dataset sortby": handle sorting by string-valued series
- OLS output: don't print out DW statistic when calculation of
  Durbin's h fails
- Fix: when extracting a column of a "dated" matrix, copy
  across the dates information
- Documentation: add material on forecasting for VARs and
  other multi-equation systems
- Improve format of panel plot when there are many unnamed
  individuals
- gretlcli and gretlmpi on MS Windows: accept unicode filenames
  on the command line
- "midasreg" command: be more flexible in parsing arguments to
  mds() terms
- Add to practice scripts: simulation using Klein model
- Implement the '^' operator (logical product) for string-
  valued series
- xlsx data importer: handle correctly the case where a given
  column is "partially" string-valued
- dbnomics data importer: handle absence of dimensions_labels
  in some cases
- mpiscatter() function: revise rule for dividing matrices
  for greater efficiency
- Fix bug: possibility of invalid XML when saving a model to
  session file
- Fix bug: "smpl" command rejects the combination of "full"
  and --quiet
- Fix: --single-yaxis option not respected by "gnuplot" and
  "plot" when a band is specified
- Fix: GUI dialog for "join" was not working on Windows
- Fix: work around bug in Apple's LAPACK that could lead to
  a crash when computing eigenvalues
- Fix: the Preview button in print dialogs was not working
  in macOS build
- Fix: prune correctly the regressor list in the "perfect
  prediction" case in RE probit
- Fix: incorrect $vcv matrix for bivariate probit models
- Fix: dbnomics import misaligning data of different
  frequencies in certain cases
- Fix: $obsmajor and friends not working for daily data
  with non-trading days omitted and dates given in the old
  form of YYYY/MM/DD; also "dataset pad-daily" not working
  with such old-style dates
- Fix: potential crash on closing a maximized window on
  recent macOS (a GDK problem)
- MS Windows build: support printing scripts with syntax
  highlighting
- MS Windows build (64-bit): update pixman, cairo and pango
  libraries (DLLs)
- MS Windows build: update libeay.dll so as to prevent
  crashes on certain CPUs
- MS Windows: give up on trying to write downloaded PDFs
  and function packages to "system" location -- go straight
  to the user's filespace
- Update packaged fedstl database
- Update several translations
