Simplify logic for selecting nev/ncv, add mpo compression support and add some more profilers
Simplify logic for selecting nev/ncv, add mpo compression support and add some more profilers


Former-commit-id: b29b7280c94464b97afcbf7be08b78b7db2e6e33
DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG