added a waterfall animation
added waterfall animation definition
added sprites.json to replace sprites.xml
removed sprites.xml and a line from sprites.json
Merge branch 'develop' into ImproveAnimationSystem
save for now
allow loading of sprites, animations, sprite data from JSON file
revamped animation system with carrying items on body. Updated crafty, and pistol/harpoon are now just one sprite that is rotated rather than a different sprite per rotation