mash logic is wrong

[Koeng101]

In similarity:

if mash.SketchSize < other.SketchSize {
        largerSketch = other
        smallerSketch = mash
    }

But in the tests:

fingerprint1 = mash.New(17, 10, crc32.NewIEEE())
    fingerprint1.Sketch("ATGCGATCGATCGATCGATCGATCGATCGATCGATCGATCGATCGATCGATCGATCGATCGA")

    fingerprint2 = mash.New(17, 5, crc32.NewIEEE())
    fingerprint2.Sketch("ATCGATCGATCGATCGATCGATCGATCGATCGATCGAATGCGATCGATCGATCGATCGATCG")

    distance = fingerprint1.Distance(fingerprint2)
    if !(distance > 0.19 && distance < 0.21) {
        t.Errorf("Expected distance to be 0.19999999999999996, got %f", distance)
    }

    fingerprint1 = mash.New(17, 10, crc32.NewIEEE())
    fingerprint1.Sketch("ATCGATCGATCGATCGATCGATCGATCGATCGATCGAATGCGATCGATCGATCGATCGATCG")

    fingerprint2 = mash.New(17, 5, crc32.NewIEEE())
    fingerprint2.Sketch("ATGCGATCGATCGATCGATCGATCGATCGATCGATCGATCGATCGATCGATCGATCGATCGA")

    distance = fingerprint1.Distance(fingerprint2)
    if distance != 0 {
        t.Errorf("Expected distance to be 0, got %f", distance)
    }

Ordering shouldn't matter