Added math string and placeholder support in amount option which make dynamic price be possible.
Added min-amount and max-amount option in price and product config.
Added menu.shop.update option in config.yml, if enable, shop GUI will refresh every second, but make the placeholder displayed in your item Lore be up to data.
1.2.2 - Default configs, improved buy more menu buttons, and so on!
Added 1000+ lines default shop configs for use!
Added new built-in placeholder: {shop} and {shop-menu}, you can use them in actions option. You can use them to add back to shop button at buy more menu.
Now buy more menu display item won't have product info at it's lore.