Setting new defaults variables for GO
I tested the new default variables optimizing 10 small molecules at pbe level. The default variable are conservative, i.e, the optimization is smooth to prevent strange behavior. However the ConvForces can be modified to 1e-6 (a.u) or even 0, and GOFireMass to 0.1, or 0.01 to speed up the geometry optimization.
It also pass the testsuite.
I don't know if it is suitable for periodic systems (& cell parameters) optimization. There is no test in the testsuite. Could any of you test it?