ChestShop-authors
Add StockUpdateEvent
This change adds an event StockUpdateEvent, which fires when the stock inside of a shop changes.
ChestShop listens to this event if the USE_STOCK_COUNTER property is set to true in order to update the stock counter on the shop sign. If this property is set to false and no other plugins are listening for the event, all logic for this event is disabled and the event is not fired, prioritising performance.
Sorry for the late reply, I looked at it but didn't have the time to reply directly and forgot.
The listener and the module class seem to be the wrong way around now. The listener should be the one reacting to the Bukkit event (ideally the same event should only be used by one listener class in the whole project but that's not the most important thing if it requires too many changes) and the module should then listen on the StockUpdateEvent to change the sign.
