Bug fix

- Validate and enforce positive price for SPECIFIC_PRICE alerts
- improve error handling and alert squelching logic.

token_bot/history_manager/history_manager.py

@@ -20,7 +20,7 @@ class HistoryManager:
                 self._history[flavor][Region(region)] = History(flavor, Region(region))
 
     async def _retrieve_data(
-        self, flavor: Flavor, region: Region
+            self, flavor: Flavor, region: Region
     ) -> List[Tuple[datetime.datetime, int]]:
         high_fidelity_time = datetime.datetime.now(
             tz=datetime.UTC
@@ -32,7 +32,7 @@ class HistoryManager:
         final_response = []
 
         def _convert_to_datetime(
-            data: Tuple[str, int]
+                data: Tuple[str, int]
         ) -> Tuple[datetime.datetime, int]:
             return datetime.datetime.fromisoformat(data[0]), data[1]