0.006   2019-06-10 (PERLANCAR)
	- No functional changes.
	- Fix typo in Changes.
0.005   2019-06-09 (PERLANCAR)
	- [ux] sleep-is-prevented: Now provide --quiet (-q) a la grep to be
	  quiet, add examples.
0.004   2019-05-28 (PERLANCAR)
	- [ux] Shut up log when 'systemctl status' exits with code=3.
	- Fix envelope response.
0.003   2019-05-22 (PERLANCAR)
	- Tweak CLI output for sleep_is_prevented().
0.002   2019-05-22 (PERLANCAR)
	- Add function: sleep_is_prevented().
0.001   2019-05-22 (PERLANCAR)
        - First release.