8.31

• Fix OpenCL interop failure when multiple Intel OpenCL platforms are present.
• Fix device-not-found platform search results being reported as errors when multiple Intel OpenCL platforms are present.
• Fix --vpp-afs failure on environments without cl_khr_image2d_from_buffer.
• Fix --vpp-afs non deterministic behaviour.
• Fix a crash on exit in --vpp-afs with YUV444.
• Fix pixel format conversion.
• Fix --frames used together with --trim referring to the empty trim list just after initialization.
• Fix an out-of-bounds write at the end of a row in --vpp-tweak. ( #313 )