Inventory Fix

A persistent problem with the game was the inventory. The back-end was way too complex, difficult to maintain, and buggy. You could soft-lock yourself just by moving things around. So I tore it all up and completely remade it. It is now simpler, less buggy, easier to maintain, and easier to use! While the inventory previously was entirely click and drag, I noticed that it was common for people to click on an item then click where they wanted to move it, and get confused when that wouldn't work. Both options are now available, so you can use whichever one works best for you.