Various small changes have been made
1. dotranspose keyword can be passed in the config file to make sure that transpose of operators is not performed. Useful for testing
2. A better code to calculate the overlap and hamiltonian matrix elements have been added. The older code should be slowly phased out
3. not spinblock stores the overlap operator and overlap between two mps can be calculated more conveniently
4. The executable OH is not generated which can be used to calculate overlap and matrix hamiltonians between arbitrary two MPS