Shadow Mutations
The bank.py is the original source file, and bank_mut.py is the processed
file with shadow mutations.
$ python3 ./bank_mut.py
0 True
1.1 False
2.1 False
2.2 False
3.1 False
3.2 False
WEAKLY_KILLED
2.1
The 0 is the main line (no mutations). Others are result from each indicated mutants.