Final framework, 7 cost functions, still needs optimization

Now have final framework in place with cost functions:

use_costsymmetrysum =  1;
use_costsymmetrydiff =  1;
use_costsymmetry =  1;
use_costcontigpast = 1;
use_costcontigfuture = 1;
use_costsum = 1;
use_costgaussian = 1;