Crash on iOS 9

[lauv-pussaaon]

Hi, I really like this component implementation of yours.

Now when running on iOS 9 it crashes at
guard let attributesCollection = super.layoutAttributesForElements(in: rect) else {
in override open func layoutAttributesForElements(in rect: CGRect)

Can you help me with this issue?

[Chris-Corea]

For what it's worth, I also ran into this same issue on iOS 9. I found that I was able to fix this by removing the call to copy() in layoutAttributesForItem(...). I'm still unsure what the implications are of not using the copied UICollectionViewLayoutAttributes, but for now I haven't run into any problems. I would submit a PR, but, again, I'm not sure if this would negatively impact performance or cause other potential issues.