Results 3 issues of nullin

See https://github.com/travispavek/testrail-python/blob/master/testrail/result.py#L83 You should store a string suffixed with 's'. '%ds' % td.seconds

See https://github.com/travispavek/testrail-python/blob/master/testrail/api.py#L271 It should either raise an error if suite_id is required, or default to None

See http://docs.gurock.com/testrail-api2/reference-tests#get_test. custom fields of a Case are returned in the get_test response as well. This library doesn't support it yet.