title: Does Vue Cli 4.4.6 scaffold ES2020 into the project
body: <p>If I run <code>vue create my-new-app</code> using the latest Vue Cli (currently version 4.4.6) will all the new ES2020 features be implemented?  (I've tested &quot;optional chaining&quot; and seem to be able to use that)</p>
  <p>If so, how can I tell from the scaffolded code? I'm seeing <code>@vue/cli-plugin-babel/preset</code> in babel.config.js, does that do it?</p>
  <p>I believe ES2020 has been officially completed.  Let me know if that's incorrect.</p>