Add TAUTULLI_PYTHON_VERSION to script environment variables

* Period separated string (e.g. 2.7.17 or 3.8.2)

plexpy/__init__.py

@@ -34,6 +34,8 @@ from apscheduler.triggers.interval import IntervalTrigger
 from UniversalAnalytics import Tracker
 import pytz
 
+PYTHON_VERSION = sys.version_info[:3]
+
 import activity_handler
 import activity_pinger
 import common