Add currency_symbol, base_currency_name, and base_currency_symbol attributes to TickerDetails class. (#241)

* add currency_symbol, base_currency_name, and base_currency_symbol attributes to TickerDetails class. useful for forex and crypto tickers

* also in the from_dict method

Author: danielatpolygonio

polygon/rest/models/tickers.py

@@ -1,4 +1,5 @@
 from typing import Optional, List
+
 from ...modelclass import modelclass
 
 
@@ -78,6 +79,9 @@ class TickerDetails:
     cik: Optional[str] = None
     composite_figi: Optional[str] = None
     currency_name: Optional[str] = None
+    currency_symbol: Optional[str] = None
+    base_currency_name: Optional[str] = None
+    base_currency_symbol: Optional[str] = None
     delisted_utc: Optional[str] = None
     description: Optional[str] = None
     ticker_root: Optional[str] = None
@@ -109,6 +113,9 @@ def from_dict(d):
             cik=d.get("cik", None),
             composite_figi=d.get("composite_figi", None),
             currency_name=d.get("currency_name", None),
+            currency_symbol=d.get("currency_symbol", None),
+            base_currency_name=d.get("base_currency_name", None),
+            base_currency_symbol=d.get("base_currency_symbol", None),
             delisted_utc=d.get("delisted_utc", None),
             description=d.get("description", None),
             ticker_root=d.get("ticker_root", None),