Miles

This PR contains mostly minor but helpful improvements to the `ttn_svd` function and its sub functions. Here is a list of changes, from most to least significant: * Use DataGraphs...

Algorithm for Projecting to a Specific total QN

1

Not urgent, but an algorithm which would be of great general use would be one for projecting a tree tensor network or MPS into a specific total quantum number sector....

Automatic reporting of contraction costs

7

Here's an idea for a useful feature we should add (could be post 1.0). We should designate a special tag syntax such as "dim=D" or "dim=chi" or possibly "|D|" or...

This is a very minor issue, but some of the QN constructors are showing up in the Documenter docs as "Type" rather than "Method" documentation. I'm not sure why, but...

Restore support for parameters as vectors

1

This PR adds back support for parameters (passed via `factorize_kwargs`) such as `cutoff` and `maxdim` to be allowed to be vectors, interpreted as the value to use at each sweep....

Based on the forum discussion [here](https://itensor.discourse.group/t/unexpected-qns-for-fermionic-siteind/2456/3), this PR adds warning messages to both the Fermion and Electron `space` functions that explains how setting `conserve_nfparity=true` when `conserve_nf=true` will have no effect...