compilable
Original version, band_cal function is added
fermi energy searching code is completed
fermi level searching code is completed to the end
SC calculation with fixed Ef isbeing made
slfcssnt cal is being made
slfcssnt calculation for bilayer is finally done
self-consistent calculation is done
slfcssnt calculation is done
Self-consistent for multilayer is done. The hamiltonians still need to typed in. gitignore file is added