Declare logger as a global variable explicitly for clarity

src/wallman_lib.py

@@ -7,6 +7,7 @@ from datetime import datetime, time
 from apscheduler.triggers.cron import CronTrigger
 
 # Setup Logging. NOTE: Declaration as a global variable is necessary to ensure correct functionality across multiple modules.
+global logger
 logger = logging.getLogger("wallman")
 
 class ConfigError(Exception):