API changes, most recent first:
+2014-04-xx - xxxxxxx - lavu 53.13.0 / 52.78.100 - avutil.h
+ Add av_get_time_base_q().
+
+2014-04-xx - xxxxxxx - lavu 53.12.0 / 52.77.100 - crc.h
+ Add AV_CRC_16_ANSI_LE crc variant.
+
2014-04-XX - xxxxxxx - lavf xx.xx.1xx - avformat.h
Add av_format_inject_global_side_data()