update docs

CHANGES.md

@@ -5,6 +5,13 @@ CHANGES
 
 * Fix: Import from Qiita:Team doesn't work
     * Introduced by 3.3.0
+* Support: Use mini-css-extract-plugin instead of extract extract-text-webpack-plugin
+* Support: Use terser-webpack-plugin instead of uglifyjs-webpack-plugin
+* Support: Upgrade libs
+    * webpack
+    * webpack-assets-manifest
+    * webpack-cli
+    * webpack-merge
 
 ## 3.3.8