Fixed integer division error for Python2 in Yahoo returns calculation.

Author: mhallsmoore

qstrader/price_handler/yahoo_daily_csv_bar.py

@@ -142,8 +142,10 @@ def _store_event(self, event):
         if self.calc_adj_returns:
             prev_adj_close = self.tickers[ticker][
                 "adj_close"
-            ] / PriceParser.PRICE_MULTIPLIER
-            cur_adj_close = event.adj_close_price / PriceParser.PRICE_MULTIPLIER
+            ] / float(PriceParser.PRICE_MULTIPLIER)
+            cur_adj_close = event.adj_close_price / float(
+                PriceParser.PRICE_MULTIPLIER
+            )
             self.tickers[ticker][
                 "adj_close_ret"
             ] = cur_adj_close / prev_adj_close - 1.0