fix: Exscript.util.mail would not accept unicode strings for email ad…

…dresses

Exscript/util/mail.py

@@ -1,18 +1,18 @@
-# 
+#
 # Copyright (C) 2010-2017 Samuel Abels
 # The MIT License (MIT)
-# 
+#
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files
 # (the "Software"), to deal in the Software without restriction,
 # including without limitation the rights to use, copy, modify, merge,
 # publish, distribute, sublicense, and/or sell copies of the Software,
 # and to permit persons to whom the Software is furnished to do so,
 # subject to the following conditions:
-# 
+#
 # The above copyright notice and this permission notice shall be
 # included in all copies or substantial portions of the Software.
-# 
+#
 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
@@ -95,7 +95,7 @@ def _cleanup_mail_addresses(receipients):
     if isinstance(receipients, list):
         receipients = ','.join(receipients)
     rcpt = re.split(r'\s*[,;]\s*', receipients.lower())
-    return [r for r in rcpt if r.strip()]
+    return [str(r) for r in rcpt if r.strip()]
 
 ###########################################################
 # Public.