API changes, most recent first:
+
+2016-01-01 - xxxxxxx - lavc 57.21.100 / 57.12.0 - avcodec.h
+ Add AVCodecDescriptor.profiles and avcodec_profile_name().
+
+2015-12-28 - xxxxxxx - lavf 57.21.100 - avformat.h
+ Add automatic bitstream filtering; add av_apply_bitstream_filters()
+
+2015-12-22 - xxxxxxx - lavfi 6.21.101 - avfilter.h
+ Deprecate avfilter_link_set_closed().
+ Applications are not supposed to mess with links,
+ they should close the sinks.
+
2015-12-17 - lavc 57.18.100 / 57.11.0 - avcodec.h dirac.h
xxxxxxx - Add av_packet_add_side_data().
xxxxxxx - Add AVCodecContext.coded_side_data.