repoze/repoze.sendmail — pull request #21 by hleumas (2013-06-09 14:17:20+00:00)
Title: Replace `utf_8` and `latin_1` encoding names for prefered `utf-8` and `iso-8859-1`.

Some email clients do not recognize utf_8 as the valid encoding, and according to the http://www.ietf.org/rfc/rfc3629, only valid name for the encoding is utf-8.