Item Buyer

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  ItemBuyer v1.0
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*Initial Creation: Purchasing of items for copper pieces in a specified quantity.
*Added console slash command '/itembuyer' to let the user create buy orders.
*Added 'all' as a recognized keyword for quantity to set quantity as the max calculated quantity possible based on inventory state and available currency.
*Added error checking for '/itembuyer' command inputs.
*Added error checking for 'player not at a vendor', 'item not found at current vendor', 'not enough bag space', and 'not enough currency'.
*Added change to buy method to fill up incomplete stacks of the requested item before making fresh stacks to keep the players inventory clean.
*Added support for items that use  extended currency marked under the player's currency tab.
*Added support for items that have multiple currency requirements.
*Added support for items that use inventory items as currency.
*Added confirmation box to control whether or not to make the requested purchase.
*Added support for items that are bought more than one at a time (i.e. )partial stacks).

ItemBuyer does not check if an item is purchasable by the player (i.e. reputation requirements met or unique item limitation) so it will not output any errors when a player attempts this.