Add DrawingStrategy.force_all
Add engine.Options.screen_changed
Add sdl.Options.screen_changed
Make Game.run force DrawingStrategy to draw everything on screen when it has changed
Not all DrawingStrategies need to know about dying Entities
Ensure that DirtyWholes observes deaths in the active Stage
Add log message in DirtyWholes.render
Turn off the red square's death after 150 dynamic steps