PS> keelyard rewind to 1
  ✓ restored step #1 
  changed your mind? keelyard rewind to 2
PS> python -m pytest -q
FAILED tests/test_cart.py::test_unknown_coupon_raises - Failed: DID NOT RAISE ValueError
FAILED tests/test_inventory.py::test_remove_floor - assert -2 == 0
3 failed, 63 passed in 0.51s
PS> keelyard rewind list
Thu 15 Oct
  #1   19:27:16  baseline      .gitignore, cart.py, inventory.py  +4
  #2   19:28:38  edit          cart.py, inventory.py
  #3   19:32:24  rewind        cart.py, inventory.py
show a step: keelyard rewind show <n> · go back: keelyard rewind to <n>
