Release 1.6.0

• Support for Python 2.6, 3.2 and 3.3 are dropped, as they are no
  longer available on Travis-CI. git-multimail probably still works
  with these versions, but they are not tested anymore.

Bug fixes

• On setups where Python's socket.getfqdn() returns localhost
  or localhost.localdomain, git-multimail now sets the FQDN
  according to socket.gethostname().

• We don't use smtplib.SSLFakeFile anymore, as it was removed from Python 3.3.

• Properly encode message body before sending it to SMTP library, avoiding an
  uncaught exception in some cases.