update NEWS for 0.4.0
update NEWS for 0.4.0

Change-Id: I90327d5169b1dba8245c427a03064d562aa26cc9

imazen/libwebp,jiehu5114/libwebp,yohunl/libwebp,jiehu5114/libwebp,Maria1099/webm.libwebp,appunite/libwebp,ericmckean/webm.libwebp,kleopatra999/webm.libwebp,comoyo/gonzo-libwebp,matanbs/webm.libwebp,yohunl/libwebp,Maria1099/webm.libwebp,jacklicn/libwebp,jiehu5114/libwebp,comoyo/gonzo-libwebp,altogother/webm.libwebp,gshORTON/webm.libwebp,imazen/libwebp,iniwf/webm.libwebp,kim42083/webm.libwebp,keane83/BLE_IM,ya7lelkom/libwebp,Maria1099/webm.libwebp,reimaginemedia/webm.libwebp,rxl194/libwebp,kalli123/webm.libwebp,reimaginemedia/webm.libwebp,abwiz0086/webm.libwebp,imazen/libwebp,kleopatra999/webm.libwebp,matanbs/webm.libwebp,kalli123/webm.libwebp,gshORTON/webm.libwebp,ya7lelkom/libwebp,Maria1099/webm.libwebp,imazen/libwebp,kleopatra999/webm.libwebp,matanbs/webm.libwebp,Suvarna1488/webm.libwebp,gshORTON/webm.libwebp,PKRoma/libwebp,abwiz0086/webm.libwebp,matanbs/webm.libwebp,redengineer/libwebp,jiehu5114/libwebp,Suvarna1488/webm.libwebp,iniwf/webm.libwebp,webmproject/libwebp,appunite/libwebp,redengineer/libwebp,reimaginemedia/webm.libwebp,Aexyn/libwebp,kalli123/webm.libwebp,gshORTON/webm.libwebp,rxl194/libwebp,Acidburn0zzz/webm.libwebp,appunite/libwebp,Suvarna1488/webm.libwebp,kalli123/webm.libwebp,jacklicn/libwebp,ya7lelkom/libwebp,PKRoma/libwebp,matanbs/webm.libwebp,keane83/BLE_IM,comoyo/gonzo-libwebp,kleopatra999/webm.libwebp,zofuthan/libwebp,comoyo/gonzo-libwebp,ya7lelkom/libwebp,comoyo/gonzo-libwebp,appunite/libwebp,Aexyn/libwebp,Aexyn/libwebp,ttyangf/libwebp,abwiz0086/webm.libwebp,kim42083/webm.libwebp,PKRoma/libwebp,iniwf/webm.libwebp,zofuthan/libwebp,zofuthan/libwebp,Suvarna1488/webm.libwebp,iniwf/webm.libwebp,PKRoma/libwebp,reimaginemedia/webm.libwebp,Acidburn0zzz/webm.libwebp,altogother/webm.libwebp,altogother/webm.libwebp,Maria1099/webm.libwebp,jacklicn/libwebp,redengineer/libwebp,PKRoma/libwebp,comoyo/gonzo-libwebp,yohunl/libwebp,webmproject/libwebp,Aexyn/libwebp,redengineer/libwebp,iniwf/webm.libwebp,ttyangf/libwebp,jacklicn/libwebp,ericmckean/webm.libwebp,altogother/webm.libwebp,ttyangf/libwebp,keane83/BLE_IM,ericmckean/webm.libwebp,ttyangf/libwebp,appunite/libwebp,keane83/BLE_IM,kalli123/webm.libwebp,kleopatra999/webm.libwebp,imazen/libwebp,Acidburn0zzz/webm.libwebp,zofuthan/libwebp,reimaginemedia/webm.libwebp,Acidburn0zzz/webm.libwebp,altogother/webm.libwebp,webmproject/libwebp,webmproject/libwebp,rxl194/libwebp,kim42083/webm.libwebp,ericmckean/webm.libwebp,abwiz0086/webm.libwebp,jacklicn/libwebp,kim42083/webm.libwebp,Acidburn0zzz/webm.libwebp,jiehu5114/libwebp,PKRoma/libwebp,zofuthan/libwebp,kim42083/webm.libwebp,ericmckean/webm.libwebp,abwiz0086/webm.libwebp,appunite/libwebp,Aexyn/libwebp,comoyo/gonzo-libwebp,rxl194/libwebp,yohunl/libwebp,yohunl/libwebp,rxl194/libwebp,keane83/BLE_IM,Suvarna1488/webm.libwebp,webmproject/libwebp,ya7lelkom/libwebp,gshORTON/webm.libwebp,redengineer/libwebp,ttyangf/libwebp