Python Virus Spread Simulator for Kids

Works well in Visual Studio Code, standard python libraries

Code inspired by https://www.youtube.com/watch?v=HHQV3ifJopo and by https://www.washingtonpost.com/graphics/2020/world/corona-simulator/

TODOS:

1. Show live statistics
2. Implement virus vectors with no symptoms
3. Implement infection via trails
4. Implement sick persons not moving
5. Implement confinement