title: how to plot a range with a line in the center with Plotly, in Python
body: <p>I have a dataframe with a timestamp, and 3 columns: price, min and max</p>
  <p>Here's a ghetto drawing I made of what I'd like to achieve:</p>
  <p><a href="https://i.stack.imgur.com/N46RC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/N46RC.png" alt="enter image description here" /></a></p>
  <p>I'd like to draw the min and max lines and then fill a zone in between them and then draw the price line in the middle.</p>
  <p>How can this be done with Plotly? (I'm just switching from the little I knew on Matplot lib to the nothing I know about Plotly :))</p>