Refactored material farmer to remove env variable from some functions and change SingleSwitchProgramEnvironment to ProgramEnvironment. This allows me to more easily test with TestProgramSwitch.
I initially wanted to remove all env variables, but make_sandwich_option requires it and I didn't also want to refactor the functions in SandwichRoutines.
Refactored material farmer to remove env variable from some functions and change SingleSwitchProgramEnvironment to ProgramEnvironment. This allows me to more easily test with TestProgramSwitch.
I initially wanted to remove all env variables, but
make_sandwich_optionrequires it and I didn't also want to refactor the functions in SandwichRoutines.