update NEWS description with new general features
update NEWS description with new general features

Change-Id: I22be12d843e84f80965dc5f2cb16ba2475ce16ad

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