Doesn't work with variations

Hi!
Firstly: Thank you very much for a great plugin – it’s awesome!

I found a bug and would love to share it with you: If one is using stock level management per variation the product will be listed as sold out as soon as one of the variation stocks hits 0. Idally it would be only listed as sold out if all variations hit 0.

Keep up the good work!

https://www.ads-software.com/plugins/woocommerce-sold-out-products/