__fetch_google__ (conn, symbol, fromdate, todate, period)
Download stock data from google. (Helper for fetch.)
fields are the data fields returned by Google.
fromdate and todate is the date datenum for the requested date range. If you enter today's date, you will get yesterday's data.
period (default: "d") allows you to select the period for the data which can be any of
- 'd': daily
- 'w': weekly