2023-01-30 Tyrone Rees
Version 1.2.1 Make the spec output portable

2013-04-12  Jonathan Hogg and Mario Arioli
Version 1.2.0. Fix bug with preservation of cg%psi. Cleanup warnings.

2006-09-14
Version 1.1.0. Lines split to have length less than 80.

2004-07-12
Version 1.0.0. Version numbering added.

2004-06-30  Mario Arioli and Gianmarco Manzini
Original version.