optimise excludes in libs in webpack

react/build/webpack.base.conf.js

@@ -21,6 +21,6 @@ module.exports = {
     umdNamedDefine: true,
   },
   externals: [
-    '@chartwerk/core', '@chartwerk/line-pod', 'd3', 'lodash', 'react'
+    '@chartwerk/line-pod', 'react'
   ]
 };