Demo 0.2.3

Fixed demo-completion-menu not appearing on demo completion

Fixed 2 collectors/injectors trying to get the same block

Fixed some ways of changing the hotbar selection being able to "hold" nothing

Catalyzed dismantlers and destroyers now work consistently on moving blocks

Loading a tutorial world will always reset the guidebook back to iron ore

roody2d.exe has much better behavior when launched without a content folder

Tweaked some textures