IMM SDK Auto Released By zhengrui.lj,Version：1.48.4

Signed-off-by: haowei.yao <haowei.yao@alibaba-inc.com>

ChangeLog.txt

@@ -1,3 +1,7 @@
+2018-12-28 Version: 1.48.4
+1, Add new set image video api.
+
+
 2018-12-28 Version: 1.48.3
 1, Add new set image video api.
 2, Add video async task api.