API changes, most recent first:
+2014-08-xx - xxxxxxx - lsws 2.1.3 - swscale.h
+ sws_getCachedContext is not going to be removed in the future.
+
2014-08-xx - xxxxxxx - lavc 55.57.3 - avcodec.h
reordered_opaque is not going to be removed in the future.