There will be read me

This is notes for Sulav to look into:

• Look into runway class and remove the currentOperation attribute because the mode attribute does the same thing. It's present in airport.py, runwa.py and frontend.py. Not needed in my opinion.
• Still think priority should be based on fuel but we should also consider removing 3 mins from the priority for each mechanical/passenger illness. Change the classes accordingly and talk to Wateen about it in the next meetup.