openbabel 2.3.1.1

Versions:

1. 2.4.90.0 - June 21, 2019 (5,5 ko)
2. 2.3.2.2 - March 30, 2016 (5,5 ko)
3. 2.3.2.1 - July 24, 2015 (6,5 ko)
4. 2.3.2.0 - June 24, 2013 (6,5 ko)
5. 2.3.1.9 - May 07, 2013 (4 ko)
6. 2.3.1.1 - March 29, 2012 (4,5 ko)