http.client missing status code constants

[inklesspen]

httplib provides status code constants like httplib.OK. http.client in py3 maintains these for backwards compatibility. Because these constants are not included in the __all__, they are not available in future.moves.http.client. This means I can't use the future moves for this library in my project.

[inklesspen]

I don't know why, but this doesn't seem to be an issue when I use standard_library.install_aliases(), only when I use with standard_library.hooks(): import http.client