title: How do you use Mongoose without defining a schema?
body: <p>In previous versions of Mongoose (for node.js) there was an option to use it without defining a schema</p>
  
  <pre><code>var collection = mongoose.noSchema(db, "User");
  </code></pre>
  
  <p>But in the current version the "noSchema" function has been removed. My schemas are likely to change often and really don't fit in with a defined schema so is there a new way to use schema-less models in mongoose?</p>