* Import documentation: Haskell assertions
We import some documentation regarding the role of assertions in Haskell, and how we use assertions in Haskell to transport information from abstract invariants to Haskell-to-C refinement proofs.
The file is a Markdown-ified version of previous documentation hosted at UNSW and Data61.
Co-authored-by: Zoltan A. Kocsis <zoltan.kocsis@data61.csiro.au>
Co-authored-by: Matthew Brecknell <Matthew.Brecknell@data61.csiro.au>
Signed-off-by: Zoltan A. Kocsis <zoltan.kocsis@data61.csiro.au>