(Most of) Source §4 extended to support delimited continuations (shift/reset or prompt/control) and effect handlers (deep or shallow), implemented as a strict extension to the CSE explicit-control evaluator. Details can be found here.
git clone https://github.com/gok99/s4s.git
cd s4s
opam install menhir dune
dune exec bin/main.exe [typed] <s4s Program>