title: How can I see the current version of packages installed by pipenv?
body: <p>I'm managing my Python dependencies with <a href="https://pipenv.readthedocs.io/en/latest/" rel="noreferrer">pipenv</a>.  How can see the currently installed versions of packages?</p>
  
  <p>I could examine <code>Pipfile.lock</code>, but is there a simpler way from the command line?</p>