Update SpriteTools Update all Tile Dictionaries to use Vectors as the key instead of parsing to/from strings now that we actually can. Updated SpriteTools Add Dig Tiles to Tileset, add Digging functionality to WorldManager. Created PreviewItem so items have Generated Thumbnails Created Shovel Holdable which digs up earth, regenerating after a random time. Dig Tiles now properly save to the world. Optimized world saves in the process