Added appveyor.yml
Updated appveyor.yml
Updated appveyor.yml
Updated appveyor.yml
Updated appveyor.yml
Updated appveyor.yml
Updated appveyor.yml
Updated appveyor.yml
Updated appveyor.yml
Updated appveyor.yml
Updated appveyor.yml
Updated appveyor.yml
Don't used pytest-xdist with setup.py test
Updated appveyor.yml
Run tests in verbose mode.
Disabled test_windows_colorized_output
Added windows build status icon to README.
Implemented more robust unicode handling.

* Immediatelly convert all args from `bytes` to `str`.
* Added `Environment.stdin_encoding` and `Environment.stdout_encoding`
* Allow unicode characters in HTTP headers and basic auth credentials
  by encoding them using UTF8 instead of latin1 (#212).
Fix Windows branch.
Avoid "TypeError: keyword arguments must be strings" on Python 3.3.