The Demo has been updated to version 0.3.4
Manage Inventory
You can now move things around in your inventory and even split item stacks as needed. I plan to add some additional instructions in the controls tab, but for now just hit space bar (by default) to remove an item, and then navigate to a new slot and hit space bar again to drop it back in.
If it's a stackable item (like some foods or bandages etc...) and there is more than one in the stack, it will prompt you by asking how many you want to move.
Buy and Sell Amount
Similar to splitting item stacks, now when you are buying or selling items it will prompt you how many you want to buy or sell. It also works in treasure chests. Hopefully this will give players more control of their inventory.
WARNING: The prompt will currently cause problems if you enter something other than a number. Please bear with me while I work on that, but overall it is working nicely.