R2N & R2DH : add sigma and sigma_cauchy entry to stats#193

dpo merged 1 commit intoJuliaSmoothOptimizers:masterJuliaSmoothOptimizers/RegularizedOptimization.jl:masterfrom

MaxenceGollier:sigma_R2N_statsMaxenceGollier/RegularizedOptimization.jl:sigma_R2N_statsCopy head branch name to clipboard