title: Where are all versions of recyclerview?
body: <p>To include recyclerview in android projects, we use</p>
  
  <p><code>compile 'com.android.support:recyclerview-v7:26.0.2'</code>.</p>
  
  <p>I want to know where does gradle get the recyclerview package. How can I know all previous versions of recyclerview?</p>
  
  <p>I have searched recyclerview package in maven and jcenter but gotten no result.</p>