v0.4.4 - can skip with 's'.
v0.4.3 (README++)
improve diff highlighting.
remove the use of git
v0.4.1 - typofix!
v0.4.0 - varia and cosmit

clean import, reduce log and better progress bar.
add tests file ex.py and test.py...
add 'mutation apply UID'.
do not show mutation during test, but during replay.
v0.3.1 with python 3.7

- Check the database exist.

- play_test_tests: pass extra argument `command` for replay...

- Specify numprocesses only when max workers > 1.

- During `play` store command for re-use in `replay`.

- Count mutation failures.

- replay: re-use command.