Improve BinnedFit test (#1068)
Improve BinnedFit test (#1068)

Add speedup printing, improve legibility, refactorization.


zzxuanyuan/root,root-mirror/root,karies/root,karies/root,zzxuanyuan/root,zzxuanyuan/root,root-mirror/root,olifre/root,karies/root,karies/root,zzxuanyuan/root,root-mirror/root,olifre/root,root-mirror/root,root-mirror/root,olifre/root,olifre/root,zzxuanyuan/root,zzxuanyuan/root,olifre/root,olifre/root,zzxuanyuan/root,root-mirror/root,karies/root,root-mirror/root,karies/root,zzxuanyuan/root,olifre/root,olifre/root,zzxuanyuan/root,karies/root,zzxuanyuan/root,root-mirror/root,root-mirror/root,karies/root,zzxuanyuan/root,root-mirror/root,olifre/root,root-mirror/root,zzxuanyuan/root,olifre/root,karies/root,karies/root,karies/root,olifre/root