title: Python-Sphinx: automatically include date and time of documentation build
body: <p>For the Python-Sphinx documentation generator, is there a standard way to automate populating the time and date when the current rendering was built? </p>
  
  <p>Looking in the <code>conf.py</code> file and at the <a href="http://sphinx-rtd-theme.readthedocs.io/en/latest/configuring.html" rel="noreferrer">docs for the RTD theme</a>, I don't see this feature listed.</p>