Update app with minimal=False doesn't work anymore

If we update app with minimal=False, marathon complains: {"message":"Invalid JSON","details":[{"path":"","errors":["You cannot specify both uris and fetch fields"]}]}
Don't know how to fix it.
>>> import logging
>>> logging.basicConfig()
>>> ...
>>> ...
>>> print app
MarathonApp::{'user': None, 'tasks': [], 'labels': {}, 'cpus': 2, 'instances': 0, 'readiness_checks': [], 'disk': 0, 'id': u'/minimal', 'tasks_running': 0, 'container': MarathonContainer::{"docker": {"forcePullImage": false, "image": "docker-registry.qiyi.virtual/guoguanglu/httpd:2.4", "network": "BRIDGE", "parameters": [], "portMappings": [{"containerPort": 8080, "hostPort": 0, "labels": {}, "name": null, "protocol": "tcp", "servicePort": 10000}], "privileged": false}, "type": "DOCKER", "volumes": []}, 'readiness_check_results': [], 'max_launch_delay_seconds': 600, 'tasks_staged': 0, 'deployments': [], 'version': None, 'env': {}, 'upgrade_strategy': MarathonUpgradeStrategy::{"maximumOverCapacity": 1, "minimumHealthCapacity": 1}, 'uris': [], 'port_definitions': [PortDefinition::{"labels": {}, "name": null, "port": 10000, "protocol": "tcp"}], 'version_info': MarathonAppVersionInfo::{"lastConfigChangeAt": "2016-08-10T07:25:07.472000Z", "lastScalingAt": "2016-08-10T07:30:06.899000Z"}, 'mem': 1024, 'task_kill_grace_period_seconds': None, 'args': None, 'backoff_factor': 1.15, 'task_stats': None, 'accepted_resource_roles': None, 'backoff_seconds': 1, 'health_checks': [MarathonHealthCheck::{"command": null, "gracePeriodSeconds": 300, "ignoreHttp1Xx": false, "intervalSeconds": 60, "maxConsecutiveFailures": 3, "path": "/", "port": 0, "portIndex": 0, "protocol": "HTTP", "timeoutSeconds": 20}, MarathonHealthCheck::{"command": null, "gracePeriodSeconds": 150, "ignoreHttp1Xx": false, "intervalSeconds": 60, "maxConsecutiveFailures": 3, "path": "/a", "port": 0, "portIndex": 0, "protocol": "HTTP", "timeoutSeconds": 20}], 'tasks_healthy': 0, 'tasks_unhealthy': 0, 'gpus': None, 'task_rate_limit': None, 'secrets': {}, 'fetch': [], 'cmd': u'sleep 100', 'require_ports': False, 'dependencies': [], 'residency': None, 'last_task_failure': MarathonTaskFailure::{"appId": "/minimal", "host": "mesos-master-dev043-cqdx.qiyi.virtual", "message": "Docker container run error: Container exited on error: exited with status 1", "slaveId": "e0a0bfc9-4663-45fa-8a12-4a7e3da9ca20-S1", "state": "TASK_FAILED", "taskId": "minimal.e7de7f4f-5ec7-11e6-b254-525400fd9fbc", "timestamp": "2016-08-10T06:59:02.932000Z", "version": "2016-08-10T06:57:05.525Z"}, 'executor': u'', 'store_urls': [], 'ports': [10000], 'constraints': []}
>>>
>>> marathon.update_app('minimal', app, minimal=True)
{u'deploymentId': u'a08b4f09-5b85-4354-b65f-c226a7e6df3d', u'version': u'2016-08-23T10:07:23.494Z'}
>>> 
>>> marathon.update_app('minimal', app, minimal=False)
ERROR:marathon:Got HTTP 400: {"message":"Invalid JSON","details":[{"path":"","errors":["You cannot specify both uris and fetch fields"]}]}
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "marathon/client.py", line 260, in update_app
    'PUT', '/v2/apps/{app_id}'.format(app_id=app_id), params=params, data=data)
  File "marathon/client.py", line 88, in _do_request
    raise MarathonHttpError(response)
marathon.exceptions.MarathonHttpError: MarathonHttpError: HTTP 400 returned with message, "Invalid JSON"
thefactory / marathon-python

Update app with minimal=False doesn't work anymore #145
