Quit if the application is already running

constants.py

@@ -6,6 +6,9 @@ from enum import Enum, auto
 from datetime import timedelta
 from typing import Any, Optional, Dict, Literal, Callable
 
+from version import __version__
+
+
 # Typing
 JsonType = Dict[str, Any]
 TopicProcess = Callable[[int, JsonType], Any]
@@ -32,8 +35,10 @@ PING_INTERVAL = timedelta(minutes=3)
 PING_TIMEOUT = timedelta(seconds=10)
 ONLINE_DELAY = timedelta(seconds=120)
 WATCH_INTERVAL = timedelta(seconds=58.8)
-# Tags
+# Strings
 DROPS_ENABLED_TAG = "c2542d6d-cd10-4532-919b-3d19f30a768b"
+WINDOW_TITLE = f"Twitch Drops Miner v{__version__} (by DevilXD)"
+# Logging
 FORMATTER = logging.Formatter(
     "{asctime}.{msecs:03.0f}:\t{levelname:>7}:\t{message}",
     style='{',