title: Set Pug(Python) syntax in sublime with emmet
body: <p>I want to set Emmet for Pug(Python) syntax in Sublime. It works ok with Pug, but when I select Pug(Python) it doesn`t work. 
  Whet I set Pug it work fully. On Pug(Python) it work partionally:
  ! + tab works
  ul>li*5 works
  But link tab doesnt work, img tab dont work. When I click link and Ctrl+E its look like html selected. 
  I read many simular themes, read emmet help.
  <a href="https://i.stack.imgur.com/BEmIO.png" rel="nofollow noreferrer">That is screenshot</a>
  Trying to set somethink like that in: </p>
  
  <pre><code>{
      "snippets": {
          "pug": {
              "filters": "jade"
          }
      }
  }
  </code></pre>
  
  <p>But doest work. Please help.</p>
  
  <p>Have some progression with that way <a href="https://packagecontrol.io/packages/Emmet" rel="nofollow noreferrer">https://packagecontrol.io/packages/Emmet</a> to add</p>
  
  <pre><code>{
    "operand": "source.pypug", 
    "operator": "equal", 
    "match_all": true, 
    "key": "selector"
  },
  </code></pre>
  
  <p>Now its work on double tab click, but its HTML syntax for source.pypug scope. </p>