title: How to set the remaining estimate in Python Jira?
body: <p>Assume that i is set to an issue. All of the following (and a series of other pathetic attempts)</p>
  
  <pre><code>i.update(timeestimate=0)
  i.update(timetracking_remainingestimate=0)
  i.update(remainingEstimate=0)
  </code></pre>
  
  <p>fail with messages like</p>
  
  <pre><code>"Field 'timeestimate' cannot be set. It is not on the appropriate screen, or unknown."
  </code></pre>
  
  <p>Since Python Jira can be used to automate essentially everything I suppose there is a proper way to do this. Atm I resort to</p>
  
  <pre><code>jira.add_worklog(i, newEstimate=0, adjustEstimate='manual',
                   reduceBy=issue.fields.timeestimate, timeSpent='1m')
  </code></pre>
  
  <p>which has the very nasty side-effect of booking 1 minute on the issue. All hints are welcome. Thx.</p>