Data from non-time-series API endpoints

[awidgery]

Does django-fitbit support getting data from non-time-series API endpoints?

e.g. /foods/log only supports getting data for a single date:

GET https://api.fitbit.com/1/user/28H22H/foods/log/date/2015-09-01.json

More info here: https://dev.fitbit.com/docs/food-logging/#get-food-logs

I've hacked something quickly with a get_fitbit_singleday_data function based on get_fitbit_data - if this is the best way I'll make a PR.