- in recon-value, add cases to handle list and cons
- in recon-inner, in app called case, add case to handle lazy list fns
that contain unannotated !'s (ie cadr, cdddr, second, third, etc)
in stepper/private/model.rkt
- add highlight-stack
- in send-step, add various skip conditions when lhs = ellipses
add file stepper/private/lazy-highlighting.rkt
in tests/stepper/through-tests.rkt
tests/stepper/automatic-tests.rkt
- add tests for list and cons fns
