Tars is a bot which will automatically merge PR's raised by greenkeeper-io if all the tests pass. It is designed specifically for devlog project.
Have a file tars.cfg with the below config in the root directory
{
access_token: "token"
}
This access token should be obtained from github.
Tars can be configured to run as a cron job. There is a great site crontab.guru to find out a suitable cron schedule expression.
Inspired by bors