title: JIRA API: Get epic for issue
body: <p>Is there a way in which I could get the epic for an issue ?</p>
  
  <p>The api returns a lot of information about an issue, but the epic is not included.</p>
  
  <p>I'm using the JIRA REST API (<a href="https://developer.atlassian.com/display/JIRADEV/JIRA+REST+APIs" rel="noreferrer">https://developer.atlassian.com/display/JIRADEV/JIRA+REST+APIs</a>). </p>