Add function to move directly to a certain position (without passing edge)
Add function to move directly to a certain position (without passing edge)


Former-commit-id: 52b3cef7c311d8e0a17ee42f7d07da9943de8437
DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG