Purchase item through action.

[rejomy]

Can you add feature to zShop like purchase n amount, but not larger than stack-size?
For example if player click left click, he will purchase only 1 item, if he click right click - he will purchase stack (if he has enough money or amount of this stack that he has money for), shift + left/right - will open simple zShop menu where player can choose amount himself. So i suggest to add it into commands if it does not completed before