Got rid of MPS methods bondTensor and doSVD.
Changed line in dmrg method that used deprecated method bondTensor.
Improved MPS sum routine to do less copying.
Removed a problematic unit test that was trying to read data from disk
Fixed a RectQR unit test that was testing a property not guaranteed by all QR implementations.
Added support for negative indices to MPSt. An index of -1 means psi.N(), -2 means psi.N()-1, -psi.N() means 1.
Changed uniqueIndex arguments to require IndexType argument. Typically MPS tensors have a unique Site and Link index relative to a neighboring tensor.
Updated arnoldi to handle case of a 1x1 matrix.
A number of fixes to LocalMPO (when representing a wavefunction to orthogonalize against) mostly related to index arrows. Added support for wavefunction edge tensors to LocalMPO_MPS.