merge final sigma addition
merge final sigma addition


Former-commit-id: 1580ebd145e9c9d58f64e5e61d55583ac57310e3
coderbhupendra/cltk,D-K-E/cltk,TylerKirby/cltk,marpozzi/cltk,TylerKirby/cltk,kylepjohnson/cltk,mbevila/cltk,diyclassics/cltk,cltk/cltk,LBenzahia/cltk,LBenzahia/cltk,eamonnbell/cltk