2023-06-05  Jennifer Scott
Version 1.3.0
Bug fixed in approach (ii) when As has some null columns.
Added warning +10 for approach (ii) in place of Error -19.
Changed the scaling for approach (ii) so that the default is to use
scaling within the call to hsl_ma97.

2023-01-12  Jennifer Scott
Version 1.2.0
Corrections to user documentation and changes to the cleaning routines.
Error -19 returned for approach (ii).
Test deck edited for more portable output.

2022-09-26  Jennifer Scott
Version 1.1.0
Memory leaks fixed.

06-2020
Version 1.0.0. Original release.