Log Message:
Update to 3.7:

3.7 (2014-06-02)
----------------

- For components with ``ignore_exceptions`` set to ``True``, mark unparseable
  lines as broken instead rising a ``ValueError``. ``VEVENT`` components have
  ``ignore_exceptions`` set to ``True`` by default. Ref #131. Fixes #104.
  [jkiang13]

- Make ``python-dateutil`` a soft-dependency.
  [boltnev]

- Add optional ``sorted`` parameter to ``Component.to_ical``. Setting it to
  false allows the user to preserve the original property and parameter order.
  Ref #136. Fixes #133.
  [untitaker]

- Fix tests for latest ``pytz``. Don't set ``tzinfo`` directly on datetime
  objects, but use pytz's ``localize`` function. Ref #138.
  [untitaker, thet]

- Remove incorrect use of __all__. We don't encourage using ``from package
  import *`` imports. Fixes #129.
  [eric-wieser]

3.6.2 (2014-04-05)
------------------

- Pep8 and cleanup.
  [lasudry]