+Changes after 1.6.2:
+
+ * The CTABLES command is now implemented.
+
+ * FREQUENCIES now honors the LAYERED setting on SPLIT FILE.
+
+ * Building from a Git repository, which previously required GIMP, now
+ requires rsvg-convert from librsvg2 instead.
+
+Changes from 1.6.1 to 1.6.2:
+
+ * Previously, numeric variables defaulted to "scale" measurement
+ level. Now, the default is "unknown", with a better guess chosen
+ based on heuristics the first time the data is read.
+
+ * Bug fixes.
+
+Changes from 1.6.0 to 1.6.1:
+
+ * The SET command now supports LEADZERO for controlling output of a
+ leading zero in F, COMMA, and DOT format.
+
+ * Bug fixes and translation updates.
+
+Changes from 1.4.1 to 1.6.0:
+
+ * In the Kruskal-Wallis test, a misleading result could occur
+ if the lower bound specified by the user was in fact higher
+ than the upper bound specified. This has been fixed.
+
+ * The DEFINE, MATRIX, MCONVERT, and MATRIX DATA commands are now
+ implemented.
+
+ * An error in the displayed signficance of oneway anova
+ contrasts tests has been corrected.
+
+ * Added Drag-N-Drop in output view.
+
+ * The Explore GUI dialog supports the "Plots" subdialog. Boxplots, Q-Q Plots
+ and Spreadlevel plots are now also available via the GUI.
+
+ * The graphical user interface for importing spreadsheets has been improved.
+ The new interface provides the user with a preview of the data to be imported
+ and interactive methods to select the desired ranges.
+
+ * The user manual, in its Info and HTML versions, now includes
+ graphical output examples and screenshots.
+
+ * New command SHOW SYSTEM to easily print system information useful
+ in bug reports.
+
+ * Build changes:
+
+ - Perl is no longer required to build.
+
+ - Build now requires Python 3.4 or later. (Building PSPP 1.4.0
+ also required Python, but it wasn't properly documented at the
+ time.)
+
+ - The Cairo and Pango libraries are now required.
+
+ - gettext 0.20 or later is now required.
+
+ - gtksourceview 4.x is now supported (3.x also remains supported).
+
+ * Output improvements:
+
+ - New drivers for output to TeX source files and to PNG files.
+
+ - Table output styles may now be set with the new option
+ --table-look and the new SET TLOOK command.
+
+ - New driver option "trim" to remove empty space from PDF,
+ PostScript, SVG, and PNG output files.
+
+ - The PDF output driver now adds an outline to allow PDF viewers to display
+ as a "table of contents" for the file.
+
+ - The HTML output driver has a new option "bare".
+
+ * New features in pspp-output:
+
+ - New --table-look and --nth-commands options.
+
+ - New get-table-look and convert-table-look commands.
+
+Changes from 1.4.0 to 1.4.1:
+
+ * Bug fixes.
+
+ * Translation updates.
+
+ * HTML output is now HTML5 instead of HTML4.0 Transitional.
+
+ * The HOST command has been reimplemented. It now supports TIMELIMIT.
+
+Changes from 1.2.0 to 1.4.0: