Stop supporting Python 2.6.
+ Monkey-patch email.message._formatparam under Python 3:
+ replace it with _formatparam from Python 2.7
+ to avoid re-encoding non-ascii params.
+
+ Fix: do not decode bytes to unicode under Python 2.7.
WHERE TO GET
Stop supporting Python 2.6.
+ Monkey-patch email.message._formatparam under Python 3:
+ replace it with _formatparam from Python 2.7
+ to avoid re-encoding non-ascii params.
+
+ Fix: do not decode bytes to unicode under Python 2.7.
+
Version 2.7.0 (2017-04-26)
Use m_lib.defenc instead of m_lib; install it from PyPI.