Add PIT mutation testing
Add PIT mutation testing

lookfirst/capsule,kevintvh/capsule,myyate/capsule,tal-m/capsule,victorbriz/capsule,lookfirst/capsule,isdom/capsule,danthegoodman/capsule,angrilove/capsule,lookfirst/capsule,lookfirst/capsule,puniverse/capsule,guiquanz/capsule,isdom/capsule,puniverse/capsule,trance1st/capsule,tal-m/capsule,trance1st/capsule,leolujuyi/capsule,kevintvh/capsule,victorbriz/capsule,guiquanz/capsule,danthegoodman/capsule,leolujuyi/capsule,angrilove/capsule,lookfirst/capsule,myyate/capsule