Improved debugging output
Changed Model to SiteSet in HamBuilder.
Fixed bug where AutoMPO was failing for non symmetric Hamiltonians designed to be converted to MPO (without any QN conservation).
Fixed bug where AutoMPO::Accumulator could not accept a std::string for an operator.
Added support for Complex coefficients to AutoMPO.
Removed unused bond_ field from LocalOp.
Changed LocalOp to use nullptr internally throughout.
Removed some now unused macros in storelink.h
Replacing storelink.h/cc with older version for now. Seeing memory bugs that could be caused by newer storelink code.