title: wrapping a list over multiple lines yaml
body: <p>In YAML I know that it is possible to wrap a string over multiple lines like this:</p>
  
  <pre><code>my_string: this is my very very very very very reeeeeeeally quite long string
  </code></pre>
  
  <p>is equivalent to:</p>
  
  <pre><code>my_string:&gt; 
         this is my very very very very
         very reeeeeeeally quite long string
  </code></pre>
  
  <p>Is it possible to do the same thing with a list? Something like:</p>
  
  <pre><code>[my, very, long, list, that, is, waaaaaaaaaaaaaaay, tooooo, long]
  </code></pre>
  
  <p>written as:</p>
  
  <pre><code>my_list:&gt;
       [my, very, long, 
       list, that, is, 
       waaaaaaaaaaaaaaay, tooooo, long]
  </code></pre>
  
  <p>but broken up over multiple lines, the docs were not specific on this. And when I tried to do it the way above when I loaded the YAML file I got the error:</p>
  
  <pre><code>yaml.scanner.ScannerError: mapping values are not allowed here
  </code></pre>