Demo Update 08 - Bug Fixes

Hi everyone! I know it hasn't been long since the last update, but there have been some major/critical bugs that I've sorted out and it's better to push them sooner rather than later. Changes: [list] [*] Fixes non 1920x1080 resolutions not working. [*] Fixes spirits not being placable in an adjacent tile to another tower. [*] Fixes lag caused by huge amounts of blood on higher waves. [*] Fixes the background music suddenly ignoring volume settings and playing at full volume. [*] Introduces new steam store-page artwork. [*] Fixes spells placed on a tower getting stuck to the mouse for 250ms when releasing after dragging them. [*] Towers can no longer be placed inside walls if you move them after being placed in a valid location. [/list]