def set(self, key, value):
        """Configure an app key/value pair"""
        cmd = [
            "heroku",
            "config:set",
            "{}={}".format(key, quote(str(value))),
            "--app",
            self.name,
        ]
        if self._is_sensitive_key(key):
            self._run_quiet(cmd)
        else:
            self._run(cmd)
Configure an app key/value pair