bump version to 0.3.1

package.json

 {
   "name": "snowflake-pt",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "Snowflake is a WebRTC pluggable transport for Tor.",
   "main": "build/snowflake.js",
   "directories": {
@@ -32,4 +32,4 @@
     "ws": "^3.3.1",
     "xmlhttprequest": "^1.8.0"
   }
-}
+}
\ No newline at end of file

translation @ c438f0bc

-Subproject commit 07340375fce64823c225c14fa7eb519a81ae0b40
+Subproject commit c438f0bc1fb9fc27ac3d940dd50c9a95f67b0e9c

webext/manifest.json

 {
   "manifest_version": 2,
   "name": "Snowflake",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "__MSG_appDesc__",
   "default_locale": "en_US",
   "background": {