title: Get fields from a specific Jira issue
body: <p>I'm trying to get all the fields and values from a specific issue my code:</p>
  <pre><code>authenticated_jira = JIRA(options={'server': self.jira_server}, basic_auth=(self.jira_username, self.jira_password))
  issue = authenticated_jira.issue(self.id) 
  print issue.fields()
  </code></pre>
  <p>Instead of returning the list of fields it returns:</p>
  <pre><code>&lt;jira.resources.PropertyHolder object at 0x108431390&gt;
  </code></pre>