p_get_financial_data can support specific start date

[zhenyulin]

Is your feature request related to a problem? Please describe. Currently, p_get_financial_data would return all the historical data, e.g. can be back in 1980s. Old reports that are not needed are excessive increasing network usage.

Describe the solution you'd like p_get_financial_data(fields, oldest="2010-01-01")

[dpguthrie]

I'm working on a fix for this where a user can specify start and end arguments similar to the history method.

[keenborder786]

@dpguthrie I would like to work on this feature request. Because seeing the code, this feature has still not being implemented. Correct me if I am wrong.