Add a failing test for lazy unicode subject
Make TestMessage.test_unicode_subject pass by force_unicode()ing subject
Hand-merge git://github.com/nwebs/flask-mail
modify setup.py to add speaklater dependency
update travis and tox
fix force_text (see django.utils.encoding)
move subject sanitization/encoding into it's own func
ascii subjects doesn't need to get encoded
Merge pull request #79 from jamesonjlee/nwebs-master

hand-merge in #50