Make thread in precise runner a daemon

Shouldn't be responsible for hanging when the program exits

Author: MatthewScholefield

runner/precise_runner/runner.py

@@ -183,7 +183,7 @@ def start(self):
         self.engine.start()
         self.running = True
         self.is_paused = False
-        self.thread = Thread(target=self._handle_predictions)
+        self.thread = Thread(target=self._handle_predictions, daemon=True)
         self.thread.daemon = True
         self.thread.start()