get currency denomination for statements

[windowpane]

Currently the get_financial_stmts() function has no way to let someone know what currency is being used for reporting. Yahoo finance sometimes reports financial statements in USD, CNY, RUB, and other currencies.

It would be a nice feature to also return what currency the income/cash/balance statements are reported in.

Relevant html snippet:

<span data-reactid="27">
<!-- react-text: 28 -->Currency in CNY. <!-- /react-text -->
<span data-reactid="29">All numbers in thousands</span>
</span>

It would be nice to include the denomination in the returned results.

e.g.,

{
'incomeStatementHistoryQuarterly': {
    'TICKER':  [ 
       {'2019-03-31': {
          'researchDevelopment': 30383000000,
          'effectOfAccountingCharges': None,
          'incomeBeforeTax': 1146941338000,
          'minorityInterest': 3299552533000,
            ....,
          'reportingCurrency': CNY }
       {'2018-12-31': {  ... } },
        ...
],
    'TICKER2': ...
 ...
}