Upgrade to QT5 for --browser-auth?

[davesteele]

When limiting to Debian packages, browser authentication fails with:

ImportError: cannot import name 'QtWebKit'

That package is not available for Python3 and QT4. It is supported for QT5. Can the code be updated?

I've disable the --browser-auth option in the interim.

[tokland]

Could you send a PR?

[davesteele]

The only thing I have available removes the argparse add-argument() call for browser-auth.

Also note the last commit pretty much matches the pypi tar, except the version is still at 0.1.3.