Update daily.py

Author: oceanapplications

pandas_datareader/iex/daily.py

@@ -101,6 +101,16 @@ def _range_string_from_date(self):
         elif 1 <= years < 2:
             return "2y"
         elif 0 <= years < 1:
+             estimated_days = ((365 * delta.years) + (30 * delta.months) + (delta.days)) * -1
+            if 0 <= estimated_days < 6:
+                return "5d"
+            elif 6 <= estimated_days < 28:
+                return "1m"
+            elif  28 <= estimated_days < 84:
+                return "3m"
+            elif 84 <= estimated_days < 168:
+                return "6m"
+           
             return "1y"
         else:
             raise ValueError(