Adding a function to allow you to ad hoc get a list of values

[johndavidback]

Allow a user to input a list of whatever options they want for a symbol and get back those results.

[johndavidback]

Here is an example use case from a script I am using that uses a fork of ystockquote: https://github.com/johndavidback/stock-picker/blob/master/stocks.py#L108-L117