ChangeDimension for counter matrizes wrong

[cha87de]

The change dimension (needed for non-fixed min/max boundaries) is not working correctly when multiple small extensions of the min/max area appear successively.

Example:

ChangeDimension(
    ChangeDimension(map[string][]int64{
        "3": []int64{0, 0, 0, 145},
    }, models.TSStats{
        Min: 50, Max: 55,
    }, models.TSStats{
        Min: 40, Max: 90,
    }, 4),

    models.TSStats{
        Min: 40, Max: 90,
    }, models.TSStats{
        Min: 0, Max: 100,
    }, 4
)

Result:

map[string][]int64{
    // "2": []int64{0, 0, 145, 0},  // THIS IS RIGHT
    "3": []int64{0, 0, 0, 145}, // THIS IS WRONG BUT RETURNED!
}

[cha87de]

cf. https://github.com/cha87de/tsprofiler/blob/master/utils/txdimension_test.go#L28-L48