issue getting holdings when there is only 1 asset.

[alphatrades4]

There is a corner case when there is only 1 asset in an account. The code below from holdings.py expects a list in response but for only one asset it doesn't return a list.

def extract ( self, response ): """Extract certain fields from response """ response = response.json()['response'] holdings = response['accountholdings']['holding']

    return list( map( Holdings._flatten_holding, holdings ) )

The fix that I am doing locally is this to get over the issue.

def extract ( self, response ): """Extract certain fields from response """ response = response.json()['response'] holdings = response['accountholdings']['holding']

    **if not isinstance(holdings, list):
        holdings = [holdings]**

    return list( map( Holdings._flatten_holding, holdings ) )

[JTraversa]

Early morning for me but a couple typo'd references later and I've referenced it in PR #54

[alienbrett]

Thanks JTraversa, this issue appears fixed and is in the latest release