04/01/2002 version 0.992
- bounds checking for critical values look-up; also add this
  as a regular gretlcli command, "critical"
- add sanity checks for regression commands and ADF test
- add importer plugins for Gnumeric and Excel workbooks
- add "Append data" menu item
- fix bug in "Create data set" functions

03/20/2002 version 0.991
- fix several "out of bounds" bugs kindly reported by Tavis Barr
- streamline the online help system
- in GUI, allow deletion of any variable (popup menu)
- go to a two-dimensional data array
- get the data status indicator working better when the nulldata
  command is used
- add menu items to set missing value codes for a particular
  series or the entire data set, and add "setmiss" command
- changing or clearing the data set now closes all model and
  stats windows (prevents crashes and garbage)
- add scalar datatype
- add progress indicator for reading/writing large data files
- add a refresh to the remote databases window after down-
  loading and installing a database
- add handling for daily data (probably needs more work)
- update to gnuplot 3.7.2 in win32 distribution
- prepare the program sources for internationalization via
  GNU gettext; add a blank .pot file to the source package

02/27/2002 version 0.99
- add option for HTTP proxy when contacting gretl data server
- fix bugs in drag and drop under Windows
- fix crashing bug when trying to save a data file with over
  (about) 120 variables
- fix bug in editing new data header info
- add mechanism to record sample when estimating a model, so
  that subsequent tests on that model can be referred to the same 
  sample
- add "native" printing of window contents under win32 and
  gnome
- enhance boxplots command, allowing for boolean expressions
  to limit the sample for individual plots in a comparative
  group of plots
- add editing toolbar to editable windows with search/replace
  and undo
- add context help (click on a command and press the "?" button)
  for the edit command script window
- correct typos in supplied data files data3-2 and data8-3
- add "critical" command (gretl console and GUI script mode only),
  to print critical values for a selected distribution
- add pvalue() function to the set of options available under
  the genr command
- improve handling of scripts opened in the GUI (including a
  prompt to save before running if changes have been made)

02/11/2002 version 0.98
- fig bug affecting frequency distributions and the test for
  normality of residuals
- improve functionality relating to saving of data files
- fix some build problems
- add more functionality to boxplots
- several fixes and enhancements to "session" mechanism
- better handling of empty data header info
- substantial code cleanups in the interest of adding API
  documentation
- allow copying LaTeX equation representation of models 
  to clipboard; also improve the typsetting of these
- change default user directory to ~/gretl under unix
- add option to make cwd rather than userdir the default
  for file opening and saving
- Change the default data format to XML (optionally gzipped)
  but retain backward compatibility with old ascii data
  format
- add dependency on libxml (dll suplied for win32)
- switch from ".dat" to ".gdt" as default filename extension
  for gretl datafiles (but add option to GUI to use ".dat")
- changing to storing data header info in buffer rather than using
  repeated file I/O
- add search/replace dialog to window for editing scripts; also
  Edit/Paste menu choice and choice of fixed font
- add drag and drop support for datafiles under win32, 
  register the .gdt suffix for gretl datafiles, and add an icon
  for these files

12/14/2001 version 0.97
- fix breakage of var command in GUI
- add facility to draw boxplots
- add various formats to copy of models to clipboard (HTML,
  RTF, LaTeX)
- enable LaTeX and RTF copying for correlation matrix and
  summary statistics windows
- Add the LMF statistic (Kiviet, 1986) for the autocorrelation
  LM test
- Add prompt to save data on exit, if the data set has been
  changed or newly constructed
- Fixes to BOX1 datafile reading function
- small fixes to display of databases
- revert behavior in case of taking logs of series with non-
  positive values (i.e. fail gracefully)
- add initial gnome support
- convert manual to SGML (DocBook) and update
- support directory names with spaces (yuck) under win32 
- under win32, use registry instead of system-wide config file
  libgretl.cfg and per-user gretl.rc; also use native win32
  dialog boxes for more functions
- add check for GRETL_HOME environment variable
- make gnuplot command configurable under Preferences (meant
  for win32)
- add a menu bar to the spreadsheet window

07/26/2001 version 0.96
- update to gtkextra version 0.99.16
- fix bug in Preferences/Toolbar entries

07/17/2001 version 0.95
- update to gtkextra version 0.99.15
- fix crash bug on opening a saved "session"
- fix bug that broke the "run" command on win32

06/14/2001 version 0.94
- make "false" the default for the automatic gretl update query
  on startup
- catch errors in ar, tsls and scatters commands due to insufficient
  arguments

05/11/2001 version 0.93
- fix problem with printing of actual, fitted and residual in the
  case of a binary dependent variable
- CVS data export: put quote marks around the dates or observation
  marker strings

04/23/2001 version 0.92
- library version goes to 6.0.0
- fixes to pprintf() function
- add "pooled OLS" model command and panel diagnostics test
  (fixed effects and random effects models)
- various fixes suggested by lclint
- fix bug with zero return from, e.g., auxreg() when there's
  an error and the return should be non-zero
- fix bug: logs command in script mode producing spurious error
- fix bug: when starting a new data set from a gretl database,
  datainfo->markers was not set to 0, which could produce a crash
- add options for compacting data when adding a higher-frequency
  series from a database to the working data set

04/03/2001 version 0.91
- library version goes to 5.0.0
- Disable saving anything other than native data file with
  extension ".dat" (safety measure)
- Make backup of data file when saving under same name
- Further improvements/fixes to gnuplot graphing routines
- Add option to edit plot commands directly, for a graph
  saved as a session icon
- GNU R: save cross-sectional data as a "dataframe"
- Remove the "with controls" gnuplot menu items: edit plots
  via the session window instead
- Institute consistent file dialogs: using gtkextra under X,
  and native Microsoft dialogs under Windows
- Bug fix in pprintf() function

03/28/01 version 0.90
- Raise version number to 0.90 reflecting fact that the feature
  set for version 1.0 is now complete
- Raise library version to 4.0.0 due to changed interfaces
- Bugfixes and improvements for built-in spreadsheet
- Make more statistics accessible under model data menu
- try to auto-detect script versus data file, when given one
  program argument and no flag
- add gretl_model_new() to lib
- cleanups in library code and headers
- enable frequency plot graphs in console mode
- add command-line options (for GUI program) to open a gretl
  database on start-up.
- add "t" facility to genr (can say, e.g., "genr dum = t>1979.4"
  for quarterly data, without previously generating t).
- add "for loop" facility with auto index variable
- auto-save changes to scripts in file viewer windows before
  running
- TODO: manual is not fully updated yet

03/16/2001 version 0.70
- Changed a few library interfaces, and so raised the library
  version number (now 3.0.0)
- update manual (please consult it on the new options below)
- add sub-sampling based on a boolean condition (smpl -r)
- make it possible to restore full sample after sub-sampling
  based on a dummy variable or boolean condition
- add graphing option: scatter of Y against X, with the Y values
  colored differently depending on value of a given dummy
- suppress echo of varnames in commands (e.g. summary) where
  a full list of vars is constructed automatically
- improve mechanism for adding/deleting files from "recent files"
  lists, and add list for command files
- improvements to numerical format in printing of data series
- fix a couple of graphing bugs (impulse plots not working, 
  frequency plot against gamma distribution wrong)
- fix precedence of boolean operators in genr expressions
  ("&" comes before "|", but both of these come after "<", ">"
  and "="), and add "!=" operator
- mods to gtk items: disallow resizing of dialog boxes, make
  clist titles passive
- fix "on exit" bug if several models estimated and not all
  have associated saved commands
- fix memory bug when switching datasets
- fix issues with displaying data, with very large datasets

03/04/2001 version 0.69
- change one library interface to permit error box if gnuplot
  command fails (and so raise library version number)
- bugfix: after running lmtest for non-linearity, the wrong
  degrees of freedom were being shown, not in the auxiliary
  regression window, but in the test summary appended to the
  model for which the lmtest was run
- bugfix: with a genr command from the GUI, even if it was
  erroneous it was being copied into the command log
- bugfix: parsing of genr expression without fully explicit
  parentheses failed under some circumstances
- bugfix: multiple scatterplots did not display under MS Windows
- bugfix: doing add/omit in GUI did not update the model used
  as the default for coeff() and such in genr commands
- console: improve/fix recall of mistyped command using the
  up arrow key; respond to typing only at the prompt
- genr: add '&', '|' and '!' logical operators 
- add program icon for X11

02/26/2001 version 0.68
- fix functions associated with opening datafiles
- fix brokenness in logging of commands to script
- "remember" models generated via GUI so that genr functions 
  such as coeff() work properly
- make Save/Export data menu items more compact
- Fix bug in (not) setting file extensions in some file "save"
  actions
- Small improvements to "gretl console"

02/21/2001 version 0.67
- cleanups in datafile writing routines (avoid excessive
  trailing zeros in data)
- make search in list boxes wrap
- fix bug: user configuration of toolbar had no effect
- fix bug: if a var is duplicated in list of regressors,
  gretlcli crashed
- fix infelicity: if a var is duplicated in regressor list,
  gui displayed blank model window along with error message
- fix bug: "gretl website" entry on toolbar under unix/Linux
  worked only if netscape was already running

02/15/2001 version 0.66
- add string search to listing of Ramanathan data files
- add "plugin" for looking up critical values of statistics
- add a toolbar (partly configurable under Preferences)
- fix to deletion of auto-generated plotting vars
- add option to view confidence intervals for coefficients
  (under Model data menu in model window)
- add the Ramanathan practice file ps2-1.inp

02/06/2001 version 0.65
- fix crashing bug in adding data to dataset from model window
- update bundled gtkextra to release 0.99.13
- various "internal" bugfixes and cleanups
- minor fixes to graphing routines, datafile saving

02/02/2001 version 0.64
- add tooltips to show full path of previously-opened files
- get "previous files" list working on win32
- minor improvements to file listing routines
- add (optional) sampling distribution graph to test calculator
- add -m (impulses) flag to gnuplot command
- fixes to auto-update mechanism (plus add documentation)

01/26/2001 version 0.63
- add gretl manpage
- add p-value finder to GUI
- add "hypothesis test calculator" to GUI
- fix error in normal batch p-value function 

01/15/2001 version 0.62
- allow comment lines starting with '#' in input files
- allow estimation of a model with df = zero
- add CUSUM (parameter stability) test for OLS models
- fix to path reading for win32 (spaces in path)
- fixes to difference of means test, difference of variance test,
  for situation where sample lengths are different
- small fixes to manual

12/09/2000 version 0.61
- fix to configure process for gtkextra

12/08/2000 version 0.60
- various fixes to distribution files
- change default user dir to $HOME/.gretl
- fixes to icon file selector
- basic link to GNU R
- further updates to manual

version 0.60pre
- revise PDF manual
- revise "scatters" command (multiple scatterplots) and add to gui
- add read/write of gzip-compressed data files (see store command)
- move descriptions of data files and practice scripts into
  separate files (no longer hard-coded into gretl)
- add new data files from Ramu Ramanathan
- update to gtkextra version 0.99.12
- add installer program for win32
- fix context help bug
- renaming of various components (library is now libgretl, cli 
  program is now gretlcli, some directories have been renamed)

(note: version 0.50 was a Windows-only one, and was not really
 released)

11/18/2000 version 0.40
- add critical value to printout of correlation matrix
- add capacity to read gretl databases from remote server
- add built-in data decompression with zlib	
- rename exported library functions, avoiding leading underscore
- add libtool versioning

11/03/2000 version 0.32
- Add capacity to read BOX1-format data files
- Add lists of recently opened files to file menus
- fix various bugs connected with "session" concept
- fix gtkextra headers bug in make process

10/20/2000 version 0.31
- add gamma distribution to pvalue command
- fix some more bugs
- hush gtk warnings in win32 version

10/15/2000 version 0.30
- introduce experimental "session" idea
- update manual
- add "pergm" (periodogram) command.  Also see "Spectrum" under
  the GUI Variable menu
- add maxlag parameter to corrgm command; also add printing
  of Box-Pierce Q stat, and partial autocorrelations
- fix up "delete" command ("insufficient args" bug)
- clean up gnuplot background code for gnuplot controller
- delete extra variables after chow test
- minor fixes to LaTeX printing
- use proper pointers to keep track of multiple windows
- add "max p-value" statement to regression printout
- put back Durbin-Watson printout line for hccm, tsls
- fix inconsistency with docs in setting of the break point
  for the Chow test
- more fixes to csv file reading
- bug fix in freq plot after freq print
- update sample label when excluding missing obs
- update iconfilesel and gtksheet to gtk+extra-0.99.11
- configure: use installed gtkextra if available
- substantial code cleanups and speedups in GUI.

06/14/2000 version 0.2i
- improve consistency in GUI w.r.t. opening of data files
  and databases
- update manual and help files
- add "delete" command (trash last variable)
- fix potential data files paths bug
- fix hsk bug (aux regression could fail silently)
- add some data files from William Greene's book
- add "while" syntax to command loop mechanism
  (useful for iterated least squares -- tested on Greene's
   example 11.3 of nonlinear estimation).  See manual.
- fix sample-length bug in add, omit
- some more informative error messages from genr
- activate "add" and "omit" for logit, probit
- make covariance matrix available for logit, probit
- add more error trapping for "add"
- code cleanup in compare.c
- can capture log-likelihood in genr with "$lnl" after logit, probit

06/09/2000 version 0.2h
- add estimation of logit and probit models and update manual
- fixes to "configure" script (gtk, termcap, paths.h) after
  compilation on HPUX
- eslclient creates user dir if it doesn't exist
- add (experimental) "parenthesizer" for genr expressions
- rearrange "summary" output
- rename Windows dll
- fix bug in "fcast" command

06/01/2000 version 0.2g
- "smpl -o" drops all observations with missing values
- binary datafiles can be saved in single or double precision
  (-s or -o flags)
- Binary datafile saving added to GUI
- Can add case markers from file to an open data set
- allow for a comment line at the top of a database .idx file
  (and display it in GUI)
- code cleanups
- delete redundant stuff
- improve some string handling functions
- fix win32 path-searching bug?

05/24/2000 version 0.2f
- updates to manual
- add handler for Penn World Table
- improve handling of native databases
- reformat some output
- add % operator in genr
- add -o flag to "smpl" command for sampling via a dummy
  variable mask.
- GUI: where appropriate, clicking on a var in the main window
  will pop its ID # into an open dialog box.
- add fcasterr to GUI, and improve graphing of forecasts
- move setobs from Data to Sample menu
- add "Gretl console" to GUI (under File menu) and update manual
- add to path-searching for datafiles called from scripts
  (include the script dir in the search)

05/10/2000 version 0.2e
- minor changes to GUI menus
- add xpm icon for X
- correct printout of t-stats for AR coefficients
- correct wasteful malloc in xpxxpy function
- better printout for F-statistic
- add discussion of NIST reference datasets to manual
- add NIST datasets to package
- add some error-checking and reporting for datafile opening
- various fixes to "genr"
- search for libesl.cfg in dir where executable resides
  (win32, Dirk's idea)
- improve handling of constants in corr, corrgm
- fix error messages from corc_hilu
- rename eslclnt.exe as eslclient.exe (win32)
- fix paths in win32 (helpfile and executable, for rerunning
  commands)

05/05/2000 version 0.2d
- improvements to manual
- fix wrong error message for zero weight var in wls
- explicit check for degeneracy in figuring summary stats
- add median(), var(), cov() to functions in genr
- add "spearman" command (rank correlation)
- add "runs" command (runs test for randomness)
- fix bug in calculation of rho hat
- fix lengths of series created by diff, etc, in relation to smpl

05/01/2000 version 0.2c
- add setobs command
- add seed command
- manual: add section on panel data, improve "genr" section
- more CSV bugfixes
- make adf, coint commands more informative
- add "paneldum" (for panel data) to genr command

04/28/2000 version 0.2b
- add fcasterr command
- many fixes in response to comments from Ramu Ramanathan and
  Dirk Eddelbuettel
- improve Makefiles
- bugfix in binary datafile handling
- update manual

04/22/2000 version 0.2a
- add arch, sim and multiply commands
- many bugfixes after running numerous test files
- further code cleanups
- improvements in printing forecasts
- fix memory leaks

04/14/2000 version 0.2
- many fixes for greater consistency with esl
- printout improvements
- internal code cleanups
- bug fixes (notably for CSV file handling)

04/05/2000 version 0.1z
- add a gui controller for gnuplot graphs
- many bugfixes
- reorganize (simplify) command-line arguments
- more updates to documentation

03/27/2000 version 0.1y
- improvements and bugfixes to CSV file handling
- improvements to "add" and "omit" commands
- add "coint" command (cointegration test)

03/23/2000 version 0.1x
- many small bugfixes
- add GNU autoconf apparatus for configuring/compiling
- updates to documentation

02/29/2000 version 0.1w
- fixes to build process
- add iconic file selector
- add "export CSV" function
- bug fixes to database reading routines

02/22/2000 version 0.1v
- add White's standard errors (hccm command)
- update help files
- Make model stats (e.g. ess) available for adding to data
  set in gui, under Model data menu.
- Add option to display values of selected variables, as well as "all".
- Fix pvalue in command-line client so that it does not act
  interactively when supplied with all params on the command line.
- Add facility to edit the full data header (.hdr) file in
  gretl (under Data menu).
- Activate the "Add observation" feature in ssheet; add a
  similar "Insert Observation" option.  Minimal testing so far.
- Fix (I think) bug in setup of new spreadsheet data set.
- Give "infobox" feedback when importing database series.

02/13/2000 version 0.1u
- save data files in GNU Octave format
- updates to documentation

02/08/2000 version 0.1t
- gretl adopted as GNU program
- add context-sensitive help for command dialogs
- add file, save for model output windows
- add search facility for help file, database windows

02/02/2000 version 0.1s
- Fixes to Makefiles
- Improvements to loop mode (Monte Carlo simulations)

01/31/2000 version 0.1r
- Initial public release

