API changes, most recent first:
+2013-11-xx - xxxxxxx - lavu 52.56.100 - ffversion.h
+ Moves version.h to libavutil/ffversion.h.
+ Install ffversion.h and make it public.
+
2013-11-xx - xxxxxxx- - lavu 52.19.0 - frame.h
Add AV_FRAME_DATA_A53_CC value to the AVFrameSideDataType enum, which
identifies ATSC A53 Part 4 Closed Captions data.