title: 'import intake' in google colab generates ContextualVersionConflict
body: <pre><code>!pip install intake-esm 
  </code></pre>
  <p>install the latest version of intake-esm (2020.12.18)  in google colab</p>
  <p>but the <code>import intake</code> statement generates the following error:</p>
  <pre><code>ContextualVersionConflict: (requests 2.23.0 (/usr/local/lib/python3.6/dist-packages), Requirement.parse('requests&gt;=2.24.0'), {'intake-esm'})
  </code></pre>
  <p>could anybody please tell me what is going wrong or how to fix this?</p>