a file named <code>.projectile</code>?</p></li>
<li><p>Is this a checkout from a version control system? Does it have a directory named <code>.git</code> or <code>.svn</code>? Currently, only Git and Subversion are supported.</p></li>
<li><p>If there’s no match then use <code>set_here()</code> to create an empty <code>.here</code> file.</p></li>
</ul></li>
</ul>
<p><strong>Challenge 1</strong></p>
<ol style="list-style-type: decimal">
<li>Can you define computational reproducibility?</li>
<li>Can you expl