sync NEWS with 0.4.4
sync NEWS with 0.4.4

(cherry picked from commit 808d4a686eb1369eba6f931b87746d671c565d58)

Change-Id: I301be57ed6d925164f3827a79c6215ab79f120c7

webmproject/libwebp,ttyangf/libwebp,webmproject/libwebp,ttyangf/libwebp,Aexyn/libwebp,PKRoma/libwebp,PKRoma/libwebp,redengineer/libwebp,Aexyn/libwebp,Aexyn/libwebp,Aexyn/libwebp,Aexyn/libwebp,redengineer/libwebp,ttyangf/libwebp,ttyangf/libwebp,redengineer/libwebp,redengineer/libwebp,PKRoma/libwebp,redengineer/libwebp,ttyangf/libwebp,webmproject/libwebp,PKRoma/libwebp,webmproject/libwebp,PKRoma/libwebp,PKRoma/libwebp,webmproject/libwebp