v0.12.2
Change lots of uses of future.standard_library to future.backports
More updates and improvements to the docs
Py2.6: ignore missing _url_collapse_path in CGIHTTPServer
Remove dependency on ``importlib`` for Py2.6 support (issue #49)
Add xfail test for issue #12
Add bytes.maketrans() method (issue #51)
Improve the bytes_to_native_str() family of functions in future.utils
Version bump to v0.12.2