added proper logging facility

src/damaris/gui/ResultHandling.py

@@ -4,10 +4,13 @@ import sys
 import os
 import os.path
 import traceback
+import logging
 import ast
 from damaris.data import Resultable
 from damaris.gui.ExperimentHandling import StopExperiment
 
+logger = logging.getLogger("damaris.result_handling")
+
 class ResultHandling(threading.Thread):
     """
     runs the result script in sandbox
@@ -52,7 +55,7 @@ class ResultHandling(threading.Thread):
                             found_blocking_sleep = True
                 
                 if found_blocking_sleep:
-                    print("Warning: time.sleep() detected in result script. This is blocking and not interruptible. Please use sleep() instead.")
+                    logger.warning("time.sleep() detected in result script. This is blocking and not interruptible. Please use sleep() instead.")
                     break
         except Exception:
             pass