check

type Opts struct {
	Count                    value.Interface
	SuccessTarget            value.Interface
	CriticalSuccessThreshold int64
	CriticalFailureThreshold int64
	ModifierFn               func(int64) int64
}

type Outcome struct {
	NormalSuccesses   int64
	NormalFailures    int64
	CriticalSuccesses int64
	CriticalFailures  int64
}