Summary
- merged
- clarified GHC and OCaml test setup;
- updated to cygwin-20190322 -- package required by ocaml_setup for zarith;
- workaround for the sake of Windows;
- more robust -- analogous to ocamlfind;
- even more robust and conservative OCaml setup;
- executable equality
- improved code equations taken over from AFP
- New abstract topological material