Mix Scenario Outline Example with normal Scenario when randomized

[nvcnvn]

The idea is utilize concurrency.

For example, if we have this Scenario Outline:

Scenario Outline: block execution
    Given some condition
    When perform the action
    Then we expect the operation take <sec> before exist

    Example:
        | sec |
        | 10 |
        | 11 |
        | 15 |
        | 15 |

I feel that when run with --random, the Scenario Outline mixed and randomized but all 4 examples will just run as the same close to each other, if we use only 2 goroutine when run, the scenario will likely stuck waiting.
I think If we can mix the Example execution with others Scenario then it will have better random.

[nvcnvn]

	for _, ft := range r.features {
		pickles := make([]*messages.Pickle, len(ft.Pickles))
		if r.randomSeed != 0 {
			r := rand.New(rand.NewSource(r.randomSeed))
			perm := r.Perm(len(ft.Pickles))
			for i, v := range perm {
				pickles[v] = ft.Pickles[i]
			}
		} else {
			copy(pickles, ft.Pickles)
		}

Seem you already randomized the pickles but the issue is it still run feature after feature sequentiality?