The implicit narrowing in the initializer list throws a compiler error for some compilers with C++11 support turned on. The specific error message is: "error: narrowing conversion of 'PyInt_AsLong(((PyObject*)o))' from 'long int' to 'double' inside { }".

Tested on Clang 5.1.0 and Mac OS X 10.9.4.

- Accurate ASYC task handling for both GStreamer generations.
- Correct video duration request for videos.
- More accurate pipeline destruction.
- Correct color space conversion plugin for GStreamer 1.0.

When we have similar matrices in input, then algorithm returns matrices
with NaN values.

- fixed lena.png extension
- fixed getTextSize wrapper
- added junit html report generation