message: add webp to the s3 asset pattern
diff: @@ -7,7 +7,7 @@ module.exports = function (deployTarget) {
  // these get more aggressive caching because they are sub-resources with fingerprinted URLs
  let s3AssetPattern =
  - '**/*.{js,png,gif,ico,jpg,map,xml,txt,svg,swf,eot,ttf,woff,woff2,ttc,otf}';
  + '**/*.{js,png,gif,webp,ico,jpg,map,xml,txt,svg,swf,eot,ttf,woff,woff2,ttc,otf}';
  let ENV = {
  build: {},
  