+Changes from 0.7.1 to 0.7.2:
+
+ * Updated Perl module interface.
+
+ * Value labels for long string variables are now supported.
+
+ * Missing values for long string variables are now supported.
+
+Changes from 0.7.0 to 0.7.1:
+
+ * Added a perl module to facilitate reading and writing of pspp system
+ files from perl programs.
+