Add cross-platform CI wheel builds

[Tobotimus]

Hi! Here is a patch for this repository's CI configurations to include building and deploying wheels for Linux (x86-64 and i686), MacOS (10.6) and Windows (x86-64 and x86). They are built for Python versions 2.7, 3.4, 3.5, 3.6 and 3.7. Obviously a source distribution is still included for platforms not included here.

I've made use of the amazing cibuildwheel repository, which makes this a fairly painless task.

All that's required for this to work now is for the maintainer to add his/her username and encrypted password for PyPI to the config files, merge and tag. I've tested this and uploaded to TestPyPI via this method.

You can also remove the env var placeholders for the username/password in .travis.yml and appveyor.yml, and instead set them in the project settings on travis-ci.org and appveyor.com if you prefer.

[ztane]

Hmm, I'll look into this on weekend.

[ztane]

Seem that was a lie 21 days ago :( too busy but I'll try to get to it soon.

[Tobotimus]

It's fine, I totally understand :)

[asfaltboy]

Any updates on this?

Also, I'd like to suggest we remove setuptools from install_requires and rely on users to either install the wheel or if they want to build from source, install setuptools (done for us with latest pip version).

Refs:

• https://setuptools.readthedocs.io/en/latest/setuptools.html#distributing-legacy-setuptools-projects-using-ez-setup-py
• https://www.bernat.tech/pep-517-518/

[ppmdo]

Interested in this...

[asfaltboy]

Could be made even simpler with GitHub actions:
pypa/gh-action-pypi-publish#15 (comment)

[apacha]

@ztane Please assign collaborators, in case you can no longer maintain this package. There are thousands of users that would see issues fixed that were reported years ago.

[polm]

I made a fork with wheels, see #61 for details.

[asfaltboy]

I can only recommend to try out joerick/cibuildwheel, it's pretty awesome!