Version 2.3a.
bison 3.2.3
bison 3.2.2
bison 3.2.1
bison 3.2.1.0
bison 3.2
bison 3.1.91
bison 3.1.90
Version 1.30b.
Version 1.30c.
Version 1.30d.
Version 1.30e.
Version 1.30f.
Version 1.30g.
Version 1.30h.
Version 1.30i.
Version 1.30j.
Version 1.30k.
Version 1.30l.
Version 1.31.