Chapters in Simplebug tutorial
simpleObjCBug Bug is now Objective-C class
simpleObjCBug2 Adds FoodSpace object
simpleSwarmBug Adds a ModelSwarm
simpleSwarmBug2 Many bugs...
simpleSwarmBug3 Reads parameters from file
simpleObserverBug Adds ObserverSwarm & GUI
simpleObserverBug2 Adds more sophisticated GUI
simpleExperBug Runs multiple experiments