Organizational: putting the notebooks in their own directory - for now just copying them there, since one has to do ` export PYTHONPATH="/local/path/to/pyALF:$PYTHONPATH"  `, so that is a change which we should discuss first.

Calling
python3  ./Run.py -R --alfdir /Users/assaad_home/ALF/Work --machine FakhersMAC  --branch_R 145-improve-predefined-hopping-and-hubbard-hamiltonian --ham_name_R Hubbard
wtih
{"Model": "Hubbard", "Lattice_type": "Square", "L1": 4 , "L2": 4, "NBin": 5}
produced
Hubbard_Hubbard_Square_L1=4_L2=4/