demo.py now has a main which can also be executed after import
demo.py now has a main which can also be executed after import

dtusar/coco,oaelhara/numbbo,oaelhara/numbbo,dtusar/coco,dtusar/coco,dtusar/coco,NDManh/numbbo,NDManh/numbbo,dtusar/coco,oaelhara/numbbo,NDManh/numbbo,dtusar/coco,oaelhara/numbbo,oaelhara/numbbo,dtusar/coco,dtusar/coco,oaelhara/numbbo,dtusar/coco,NDManh/numbbo,oaelhara/numbbo,NDManh/numbbo,NDManh/numbbo,NDManh/numbbo,NDManh/numbbo,NDManh/numbbo,oaelhara/numbbo,oaelhara/numbbo