fixed bugs: double animation render & charged arrow direction change issue; also updated enemy spritesheets


- fixed the double animation bug that would render two Xaviers when sword and arrow attack were pressed simultaneously
- fixed the blinking-charged-arrow-direction-change-render issue. (Whenever the arrow was fully charged and blinking, if the player were to changed direction before firing, it would still draw the arrow in the previous direction. This no longer happens. Now whenever the player changes direction, the charged arrow is lost and must be "recharged"
- fixed the minimap rendering issue for the tutorial state; the minimap was being drawn over the textbox making some of the tutorial text unreadable. 
- updated the enemy spritesheets so that the Loafer looks more distinct. Maniac and Dragon thugs are now less blurry and have more defined edges