Qt.py

[:python_version < "2.7" and sys_platform == "darwin"]
PySide

[:python_version <= "3.4" and sys_platform == "win32"]
PySide

[:python_version > "3.4" and sys_platform == "win32"]
PySide2

[:python_version >= "2.7" and sys_platform == "darwin"]
PySide2

[dev]
wheel

[test]
pytest
