- Add __plugin_pythoncompat__

octoprint_FanSpeedMirror/__init__.py

@@ -137,11 +137,12 @@ def get_update_information(self):
 # ("OctoPrint-PluginSkeleton"), you may define that here. Same goes for the other metadata derived from setup.py that
 # can be overwritten via __plugin_xyz__ control properties. See the documentation for that.
 __plugin_name__ = "Fan Speed Mirror"
+__plugin_pythoncompat__ = ">=2.7,<4"
 
 def __plugin_load__():
 	global __plugin_implementation__
 	__plugin_implementation__ = FanSpeedMirror()
-
+	
 	global __plugin_hooks__
 	__plugin_hooks__ = {
 		"octoprint.comm.protocol.gcode.sent": __plugin_implementation__.mirror_fan,