Flow Code

I believe this is how I do this? I'm trying to get this code up on the public repository. I worked through everything once again and I believe it should all work. There's an example main in the main flow python script. Just run it to see the output, and you can change input steps and variables at the bottom to see what happens. Right now the GUI/controlling script will have to deal with the flags. Or maybe we could make it so that the Patient object takes that flag as an attribute. But we still have to decide how flags will be displayed, and what flags are needed for what situations. I will work on making a test script that uses both the Flow and Day classes together soon.