src/scene_util.js: return this from setters, make image scale itself to this.size if present
src/scene_util.js: return this from setters, make image scale itself to this.size if present

juanpiwi/magi,kig/magi,juanpiwi/magi,juanpiwi/magi,kig/magi,juanpiwi/magi,kig/magi