Merge Qrochet into Tenet?

[mofeing]

Qrochet has been a place where to experiment with Quantum Tensor Networks outside of Tenet, so we could break things fast without compromising other code depending on Tenet. We now have a clearer view of what interface should we provide. Also, as the number of serious users grows, we require a more stable library.

Thus I'm proposing to move the code back to Tenet. The benefits that I believe we would get are:

• New users might get confused with 2 packages for TNs, and currently all of our work is based on top of Qrochet.
• Qrochet doesn't add any strong dependency over Tenet, so it wouldn't mean to have a heavier package in the end.
• Better exploit structural and behavioral inheritance in the Tensor Network type hierarchy.
• Qrochet is not a great name.

Since there are no overheads or costs involved, I don't think there are any cons.

My idea is that once that we merge back Qrochet into Tenet, which will be a progressive process, we should be close to releasing Tenet 1.0.

[Todorbsc]

In my opinion, it could be a nice idea to have all kinds of tensor networks (in this case Qrochet) inside Tenet because, after all, they are still tensor networks and because of the list of reasons you wrote above.

The discussion would be about how we plan to merge it back in Tenet, e.g. as an extension of Tenet.

Also, I think it's fine to release a stable version of Tenet (1.0) after doing this, as well as solving the important bugs there may exist for the basic functioning of Tenet.