Python 3 port: /!\ Python 3.6+ is now needed to use SàT Pubsub /!\ instability may occur and features may not be working anymore, this will improve with time The same procedure as in backend has been applied (check backend commit ab2696e34d29 logs for details). Python minimal version has been updated in setup.py

--- a/sat_pubsub/exceptions.py	Fri Aug 16 12:48:34 2019 +0200
+++ b/sat_pubsub/exceptions.py	Fri Aug 16 12:53:33 2019 +0200
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 #-*- coding: utf-8 -*-
 
 # Copyright (c) 2012-2019 Jérôme Poisson