en.txt is now read in in eV rather than a.u.
Parallelized rho_prop.exe to split frequency range into equally spaced points.
Cleaned up code and merged all parameter-related source into one file.
Added option to couple the system with MNP or just look at bare system.
Decluttered input file for rho_prop.exe and add a descriptive file,
input_file_description.txt