initial python3 support
made most tests work again, set up travis to test Python 3
fixed some renaming leftovers
don't try to build with Django 1.2-1.4 on Python 3
check version instead of try/except to import url functions

this way we don't trigger deprecation warnings
bundled six
use BytesIO on Python3 to test WSGIRequest
fixed formatting in travis config
fixed another encoding test
gevent doesn't support python 3 yet
removed the six dependency, we bundle our own now
added a note about Python 3 in CHANGES
added python version classifiers to setup.py
added wheel configuration
fixed timeout support for HTTP transport
removed unneeded error_logger in transport again
use explicit timeout argument instead of **kwargs
bumped version to 1.2