title: Why is httr not reading a response-class object?
body: <p>I'm trying to update a project from March 2018. Previously, I had used</p>
  
  <pre class="lang-r prettyprint-override"><code>library("httr")
  library("rjson")
  api.url &lt;- "http://api.tvmaze.com/lookup/shows?imdb=tt1325113"
  response &lt;- GET(api.url)
  response.list &lt;- fromJSON(content(response))
  </code></pre>
  
  <p>Previously, this returned a list containing the parsed json information that I used sapply to extract the relevant information from. Now, it's showing</p>
  
  <pre class="lang-r prettyprint-override"><code>Error in UseMethod("content", x) : 
    no applicable method for 'content' applied to an object of class "response"
  </code></pre>
  
  <p>There appears to be some kind of change in the httr package but I can't figure out what it is. Any ideas of what might be different and how to get around it?</p>