Memory taken by cards is not being released after swiped

[ghost]

First of all, thank you for your nice library, I am using your library in the project I am working where in the project I am loading cards using the JSON response from my website. I have implemented a basic mechanism which will load 20 cards at a time and after they are swiped another 20 cards will be loaded from REST api. The issue is when cards are created they consume a small amount of memory for image in the card, and they memory is not being released when the card is swiped and removed from view, for about 50 cards swiped the memory consumption of the app increases to 400mb from 120mb. I think the memory taken by each cards is not released. What can I do to avoid this situation ?