added tiingo csv response serialisation options#822

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tch wants to merge 3 commits intopydata:mainfrom

tch:tch-add-tiingo-csv

Commits on Aug 31, 2020

added csv response handling for tiingo apis
Tomasz Chodakowski
committed
formatting and whatsnew updates
Tomasz Chodakowski
committed

Commits on Sep 1, 2020

Handle response_format value errors + cosmetics
Tomasz Chodakowski
committed