Upgrade vanilla-app to the latest version

Author: jeromewu

apps/vanilla-app/package.json

@@ -4,7 +4,8 @@
   "description": "browser example",
   "private": true,
   "scripts": {
-    "prestart": "node ../../scripts/download-assets.js",
+    "download": "node ../../scripts/download-assets.js",
+    "prestart": "npm run download",
     "start": "node server.js"
   },
   "author": "Jerome Wu <jeromewus@gmail.com>",

scripts/download-assets.js

@@ -4,14 +4,15 @@ const fs = require("fs");
 const NPM_URL = "https://registry.npmjs.org";
 const ROOT = "public/assets";
 
-const FFMPEG_VERSION = "0.12.2";
+const FFMPEG_VERSION = "0.12.3";
 const UTIL_VERSION = "0.12.0";
-const CORE_VERSION = "0.12.1";
+const CORE_VERSION = "0.12.2";
+const CORE_MT_VERSION = "0.12.2";
 
 const FFMPEG_TGZ = `ffmpeg-${FFMPEG_VERSION}.tgz`;
 const UTIL_TGZ = `util-${UTIL_VERSION}.tgz`;
 const CORE_TGZ = `core-${CORE_VERSION}.tgz`;
-const CORE_MT_TGZ = `core-mt-${CORE_VERSION}.tgz`;
+const CORE_MT_TGZ = `core-mt-${CORE_MT_VERSION}.tgz`;
 
 const FFMPEG_TGZ_URL = `${NPM_URL}/@ffmpeg/ffmpeg/-/${FFMPEG_TGZ}`;
 const UTIL_TGZ_URL = `${NPM_URL}/@ffmpeg/util/-/${UTIL_TGZ}`;