[PyQt] ANN: PyQt v5.4 Released

[Phil Thompson]

PyQt v5.4 has been released. This includes full support for Qt v5.4.0 
including the new QtWebChannel and QtWebEngineWidgets modules, and the 
restored QtXml module.

The Windows installers do not include the QtWebEngineWidgets module as 
WebEngine required MSVC2013 and Python3 requires MSVC2010. Qt has been 
built with the new dynamic OpenGL option so PyOpenGL should work again 
for most people.

Phil