With today's update this `serverless.yml` no longer deploys:

```yaml
service: "localtest"

provider:
  name: "aws"
  runtime: "nodejs10.x"

functions:
  hello:
    handler: "handler.hello"
    events:
    - http:
        path: "/"
        method: "get"
        integration: "lambda-proxy"

plugins:
  - "serverless-localstack"

custom:
  localstack:
    stages:
      - "local"
```

The error on the localstack end seems to be that it cannot create `ApiGateway::RestApi` type resources:
```
2019-10-24T09:10:41:DEBUG:localstack.utils.cloudformation.template_deployer: Deploying resource type "ApiGateway::RestApi" id "ApiGatewayRestApi"
2019-10-24T09:10:41:DEBUG:localstack.utils.cloudformation.template_deployer: Request for creating resource type "ApiGateway::RestApi": create_rest_api {'name': 'local-localtest'}
2019-10-24T09:10:41:ERROR:localstack.services.cloudformation.cloudformation_starter: Unable to parse and create resource "ApiGatewayRestApi": argument of type 'NoneType' is not iterable
```

This is followed by repeated `TypeError` and then `KeyError`.
if _type == bool:
            return _obj in ['True', 'true', True]
        if _type == str:
            return str(_obj)
        if _type == int:
            return int(_obj)
        return _obj
    def fix_types(o, **kwargs):
        if isinstance(o, dict):
            for k, v in o.items():
                if k in attr_names:
                    o[k] = cast(v, types[k])
        return o
    result = common.recurse_object(params, fix_types)
    return result
def deploy_resource(resource_id, resources, stack_name):
    resource = resources[resource_id]
    resource_type = get_resource_type(resource)
    func_details = RESOURCE_TO_FUNCTION.get(resource_type)
    if not func_details:
        LOG.warning('Resource type not yet implemented: %s' % resource_type)
        return
    LOG.debug('Deploying resource type "%s" id "%s"' % (resource_type, resource_id))
    func_details = func_details[ACTION_CREATE]
    func_details = func_details if isinstance(func_details, list) else [func_details]
    for func in func_details:
        client = get_client(resource, func)
        if client:
            deploy_resource_via_sdk_function(resource_id, resources, resource_type, func, stack_name)
def deploy_resource_via_sdk_function(resource_id, resources, resource_type, func_details, stack_name):