Release as a universal wheel

[adamchainz]

By releasing as a Python wheel as well as a source distribution, you can speed up end user’s installs. After merging this command, to release you just need to run python setup.py clean sdist bdist_wheel upload.

[temoto]

Blocked by #96

[fengxx]

could we release two wheel packages before #96 get fixed?
run pythonX setup.py clean bdist_wheel will generate wheels
httplib2-0.12.1-py2-none-any.whl httplib2-0.12.1-py3-none-any.whl

[temoto]

@fengxx sure, please check it. I uploaded 0.12.1 to test PyPI, wheels only.

pip install -i https://test.pypi.org/simple/ httplib2

[fengxx]

sorry for late response, py3 package is ok, but the py2 package seems not be packaged correctly

from httplib2 import socks
lib/python2.7/site-packages/httplib2/__init__.py", line 462
    print("%s:" % h, end=" ", file=self._fp)

Files used for testing

python2.7 -m pip download --no-deps -i https://test.pypi.org/simple/ httplib2
Looking in indexes: https://test.pypi.org/simple/
Collecting httplib2
  Downloading https://test-files.pythonhosted.org/packages/40/11/ff7332ee8d2a6fa29d61bb5ea09c23a14dcaa4429aa17e1588c0c65d5c8a/httplib2-0.12.1-py2-none-any.whl (95kB)
    100% |████████████████████████████████| 102kB 810kB/s
  Saved ./httplib2-0.12.1-py2-none-any.whl
Successfully downloaded httplib2

python3 -m pip download --no-deps -i https://test.pypi.org/simple/ httplib2

  Downloading https://test-files.pythonhosted.org/packages/6c/a6/55095dd1be5d1326b191ed1e73080a5ac4ebe59c335ededfa4c9f0cc1b47/httplib2-0.12.1-py3-none-any.whl (94kB)
    100% |████████████████████████████████| 184kB 1.3MB/s
  Saved ./httplib2-0.12.1-py3-none-any.whl
Successfully downloaded httplib2

[fengxx]

I think we need use clean --all to remove build/lib folder

running clean
removing 'build/lib' (and everything under it)
removing 'build/bdist.macosx-10.12-x86_64' (and everything under it)
'build/scripts-2.7' does not exist -- can't clean it
running bdist_wheel
running build
running build_py
creating build/lib
creating build/lib/httplib2
copying python2/httplib2/iri2uri.py -> build/lib/httplib2
copying python2/httplib2/certs.py -> build/lib/httplib2
copying python2/httplib2/__init__.py -> build/lib/httplib2
copying python2/httplib2/socks.py -> build/lib/httplib2
copying python2/httplib2/cacerts.txt -> build/lib/httplib2
...

Otherwise build/lib is not cleaned up, which may contain python3 code

[temoto]

@fengxx Thanks, I re-uploaded it after clean --all as 0.12.2. That import ...socks line passed. Please check more.

[fengxx]

thanks, 0.12.2 works on both py2/py3