Jutho

These are the singular values of the forward calculation: ```julia [0.5827127960663261, 0.013616701381118779, 0.013616700815086135, 0.00031674568674968046, 7.429999268923436e-6, 7.4299980267290364e-6, 2.0722724010027094e-7, 2.0722722219200433e-7, 2.0722720896899213e-7, 2.0540682979946611e-7, 5.767011119369518e-9, 5.767010235714964e-9, 4.053212060637025e-9, 4.053210898281218e-9] ``` Clearly, there are degeneracies here,...

I assume this issue has not yet magically gone away yet. How pressing is this?

Yes; I do not feel great deviating from the arguments that were entered, but I guess there is (currently) no way to replicate such dynamic behavior in any other way....

I am still a bit confused; given that you manually call KrylovKit's rrule, is it possible to set the tolerance after you already know `S` from within PEPSKit? I definitely...

Hi, I am certainly willing to look into this, if one could point me to what exactly I should be looking for. It will anyway be interesting, because other than...

Thanks for the reminder, I keep forgetting about this one. `UnsafeStridedView` is completely removed from Strided, because the overhead of dealing with structs that point to `Array`s should have been...

Can I assume that this can be closed? If not, feel free to reopen or open new issues.

This seems very similar (at least in terms of functionality) to the (mutating) interface imposed by [VectorInterface.jl](https://github.com/Jutho/VectorInterface.jl), on which also KrylovKit.jl is built and which is a very light-weight dependency....

Yes, I should at some point convert the README into an actual documentation and update it, though in principle everything is in the README. I will leave this open so...

Thanks for this and my apologies for the late response. I was on holidays in the second half of August. At a first glance, this looks of great quality. I...