API changes, most recent first:
+2015-10-29 - lavc 57.12.100 / 57.8.0 - avcodec.h
+ xxxxxx - Deprecate av_free_packet(). Use av_packet_unref() as replacement,
+ it resets the packet in a more consistent way.
+ xxxxxx - Deprecate av_dup_packet(), it is a no-op for most cases.
+ Use av_packet_ref() to make a non-refcounted AVPacket refcounted.
+ xxxxxx - Add av_packet_alloc(), av_packet_clone(), av_packet_free().
+ They match the AVFrame functions with the same name.
+
+2015-10-27 - xxxxxxx - lavu 55.5.100 - cpu.h
+ Add AV_CPU_FLAG_AESNI.
+
+2015-10-22 - xxxxxxx - lavc 57.9.100 / lavc 57.5.0 - avcodec.h
+ Add data and linesize array to AVSubtitleRect, to be used instead of
+ the ones from the embedded AVPicture.
+
2015-10-22 - xxxxxxx - lavc 57.8.100 / lavc 57.0.0 - qsv.h
Add an API for allocating opaque surfaces.