Increase timeout for Windows.
Fixed test_fields on Windows and some PEP8 love.
Use Tornado 3.x in tests.
Refactored tornado test cases.

Use an explicit IOLoop instance so it should be more clear what's going
on internally.
Fixed check for IPv6 support.
Merge pull request #288 from schlamar/fix-ipv6-check

Fixed check for IPv6 support.
Merge pull request #285 from schlamar/timeout-win

Increase timeout for Windows.
Merge pull request #286 from schlamar/test-fields

Fixed test_fields on Windows and some PEP8 love.
Revert #282.
Merge pull request #287 from schlamar/refactor-tornado

Refactored tornado test cases.