Create release with python 3.5 support

[pefoley2]

The enum34 requirement fails to build properly when running pip install gssapi under python 3.5.
As the enum34 package is unnecessary for python3.5, would it be possible to publish a new release containing the fix in d4b5c71?

Collecting enum34 (from gssapi==1.1.3->-r requirements.txt (line 14))
Downloading enum34-1.0.4.tar.gz
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "/tmp/pip-build-sfiuv82x/enum34/enum/init.py", line 371, in getattr
return cls.member_map[name]
KeyError: '_convert'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 3, in <module>
  File "/home/travis/virtualenv/python3.5.0/lib/python3.5/site-packages/setuptools/__init__.py", line 11, in <module>
    from setuptools.extension import Extension
  File "/home/travis/virtualenv/python3.5.0/lib/python3.5/site-packages/setuptools/extension.py", line 8, in <module>
    from .dist import _get_unpatched
  File "/home/travis/virtualenv/python3.5.0/lib/python3.5/site-packages/setuptools/dist.py", line 16, in <module>
    from setuptools.depends import Require
  File "/home/travis/virtualenv/python3.5.0/lib/python3.5/site-packages/setuptools/depends.py", line 6, in <module>
    from setuptools import compat
  File "/home/travis/virtualenv/python3.5.0/lib/python3.5/site-packages/setuptools/compat.py", line 45, in <module>
    import http.client as httplib
  File "/opt/python/3.5.0/lib/python3.5/http/client.py", line 71, in <module>
    import email.parser
  File "/opt/python/3.5.0/lib/python3.5/email/parser.py", line 12, in <module>
    from email.feedparser import FeedParser, BytesFeedParser
  File "/opt/python/3.5.0/lib/python3.5/email/feedparser.py", line 27, in <module>
    from email import message
  File "/opt/python/3.5.0/lib/python3.5/email/message.py", line 16, in <module>
    from email import utils
  File "/opt/python/3.5.0/lib/python3.5/email/utils.py", line 29, in <module>
    import socket
  File "/opt/python/3.5.0/lib/python3.5/socket.py", line 73, in <module>
    IntEnum._convert(
  File "/tmp/pip-build-sfiuv82x/enum34/enum/__init__.py", line 373, in __getattr__
    raise AttributeError(name)
AttributeError: _convert

[frozencemetery]

Yes, I'll look into publishing a 1.1.4 with d4b5c71 in it.