MMFF94s_new parameters

[hypnopump]

This paper "Accuracy evaluation and addition of improved dihedral parameters for the MMFF94s" from 2019 motivated a reparametrization of the MMFF94s forcefield such that bioactive conformations could be retrieved more often (a proxy for a better forcefield); and it implemented the method in DataWarrior. It would be nice to port those parameters and have them available in the RDKit

[bp-kelley]

The parameters would be pretty simple to add, I'm not convinced that it will perform better than ETKDG though for conformation generation. Might be a nice evaluation paper for someone though :)