Using 1.4 built from latest commit on current:
Both reboot and reboot now commands works fine. However a reboot in 1 outputs:
usage: powerctrl.py [-h] [--yes] (--reboot [HH:MM ...] | --reboot_in [Minutes ...] | --poweroff [Minutes|HH:MM ...] | --cancel | --check) powerctrl.py: error: one of the arguments --reboot/-r --reboot_in/-i --poweroff/-p --cancel/-c --check is required