Qt-py

Maintenance release, it fixes the internal `QT_TESTING` environment variable such that members are properly tested during testing on Travis CI.

Thanks to sol-ansano-kim for the fix!

This release fixes 162 and makes the Qt.py wheel universal. This means no more wheel filename fragmentation.

Previous wheel filename fragmentation

Previously, `pip wheel -w . Qt.py` could generate one of the following:


Qt.py-0.6.7-py2-none-any.whl
Qt.py-0.6.7-py3-none-any.whl


or...


Qt.py-0.6.7-cp27-none-any.whl
Qt.py-0.6.7-cp35-none-any.whl
...


New wheel file naming

The wheels is now universal and `pip wheel -w . Qt.py` results in the following:


Qt.py-0.6.8-py2.py3-none-any.whl

This is a test release to attempt to produce a universal wheel.

This is a test release to attempt to produce a universal wheel.


0.6.8-test-01
This is a test release to attempt to produce a universal wheel.

This fixes 165 where `Qt.QtCompat.__binding_version__` and `Qt.QtCompat.__qt_version__` would both return `0.0.0` at all times.

This release fixes 160, where the Qt 4 version of `setSectionResizeMode` had broken since 0.6.1.

The fault was on me, having wrongly interpreted `setSectionResizeMode` as `setSectionHidden` in the [documentation](http://doc.qt.io/qt-4.8/qheaderview.htmlsetSectionHidden).

Surprisingly, the [CAVEATS test](https://github.com/mottosso/Qt.py/blob/master/CAVEATS.mdqtwidgetsqheaderviewsetresizemode) didn't catch it.