WIP: Code update

Anton Akhmerovrequested to merge
feature/code-update into master

This MR has a dual goal:

  • Updating to current holoviews to avoid a bunch of deprecation errors
  • Updating to Kwant 1.4:
  • Eliminating args=[SimpleNamespace(...)] in favor of params={...}.
  • Using the Builder.fill/Builder.substituted pattern when defining systems.

For now we do not intend to use discretizer yet.

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