add a bonuses stack to BaseGame model
add a bonuses stack to BaseGame model

Elao/curvytron,Curvytron/curvytron-arcade,lutangar/curvytron,coredump-ch/curvytron,Wohops/curvytron,Elao/curvytron-arcade,Elao/curvytron-arcade,lutangar/curvytron,Curvytron/curvytron,Curvytron/curvytron-arcade,coredump-ch/curvytron,Wohops/curvytron,Elao/curvytron,Curvytron/curvytron