value: Get rid of value_str(), value_str_rw(), value_num().
[pspp] / src / output / pivot-table.c
2019-07-22 Ben Pfaffvalue: Get rid of value_str(), value_str_rw(), value_num().
2019-07-07 Ben Pfaffpivot-table: Properly allocate pivot_table's current_layer.
2019-01-13 Ben Pfaffpivot-table: Fix use-after-free error.
2019-01-13 Ben PfaffFix numerous memory leaks.
2019-01-02 Ben Pfaffpivot-table: Fix format specifiers.
2019-01-02 Ben Pfaffpivot-table: Fix type mismatch in equal_indexes().
2019-01-01 Ben Pfaffoutput: Introduce pivot tables.