SebWouters/CheMPS2 — pull request #13 by wpoely86 (2014-11-24 13:29:26+00:00)
Title: Pass filename to HDF5 file with Hamiltonian constructor

I want to be able to do:
```
Hamiltonian("file.h5", true);
```
aka, not necessarily read the filename from `CheMPS2::HAMILTONIAN_ParentStorageName`