Generate multiple states per realization by flipping random spins after each simulation
Generate multiple states per realization by flipping random spins after each simulation

* Added multistate support for quick overview


Former-commit-id: 432d819f46fd3f608133e1fd1809d51aff89e632
DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG