[#874] Lazy Take

Description

Use a lazier version of Take. This requires and permits some beneficial restructuring of DIG and DUG constraints.

Related issue(s)

Resolves #874 (closed) by adding and using LazyTake.

✅ Checklist for your Merge Request

Related changes (conditional)

• Tests (see short guidelines)

  • If I added new functionality, I added tests covering it.
  • If I fixed a bug, I added a regression test to prevent the bug from silently reappearing again.

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    • Root README and other README.md files
    • Haddock
    • docs/
  • I updated changelog files of all affected packages released to Hackage if my changes are externally visible.

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