Lowercase scheme and authority per specification.

[joestump]

Closes #29. More robustly follows URL normalization per the specification now. See #133 for additional and related discussion.

[joestump]

@jaitaiwan I'm not sure what's going on, but it appears PT3K support never passed tests? Or isn't merged into develop? Not really sure; everything says up to date with master/develope locally.

[jaitaiwan]

We never ended up merging any py3k support into develop at all because mine was too incomplete. I don't know how it passed tests originally but it's not working now. I think the vote was on using tseaver's py3k branch and fixing the 2 tests that didn't pass.

[joestump]

Somehow .travis.yml is running PT3K tests. No idea why because it's not in this branch?

[joestump]

@jaitaiwan looks like you pushed PT3K builds to develop in c3d8b72. Can you back that out and move that over to the PT3K branch until it's merged in so we can merge this for 1.9RC1?

[jaitaiwan]

Sure not a problem.

[jaitaiwan]

@joestump change has been completed and RC1 has been tagged in a release/1.9 branch :)

[joestump]

Tests are passing. This is ready for a final review. 👍

[TimSC]

I pulled this PR into a new fork: https://github.com/TimSC/python-oauth10a