+Changes from 1.0.1 to 1.1.0:
+
+ ** The code implementing the sheet rendering has been removed. Instead we
+ use a third party library: spread-sheet-widget.
+
+ ** The "NOMISSING" keyword when generating syntax for piecharts in the frequencies
+ command was omitted. This has been corrected.
+
+Changes from 1.0.0 to 1.0.1: