Added resolution and full-screen/window options

What's changed: FEATURES -Added option to play in full-screen or window mode -Added option to select resolution (widescreen/16:9 aspect works best) -Improved visuals for enchanted wizard staff BUGS - Fixed several bugs related to wizard staff projectiles - Fixed a bug where enemies explode at the start of a zone - Fixed a bug where gibs would fall through the floor - Some smaller fixes BALANCE - Reduced bear claws minimum damage - Buffed hydra flames - Buffed manticore sting - Increased dash cooldown Once again, thanks