Improve convergence of Deltafactor in G-space
 New version for K, Na, Ne
 working on logders
 Hf and Ir
 logders for Ru, Rh, Co
 Fe without semi-core
 Playing with nlcc in Fe
 Smooth Ni without semi-core and smooth Vmodel
 Cu without semi-core states
 Zn without semicore states
 Co without semi-core states
 New version of Co
 Smoother rho_model for Fe
 Cd without semicore states
 New version for O
 This O (based on Hamann's example) is much better (10 --> 2 meV), let's try without nlcc
 4.948 without nlcc vs 2.632 (ok, this one makes sense!)
 Yet another Ne
 Increase rc for p
 Another attempt