title: Find whether lat/long coordinate is inside any Leaflet polygon
body: <p>I would like to check which polygon layer (if any) contains a given lat/long (provided by <code>map.locate())</code>. </p>
  
  <p>I know you can do this using Turf's <a href="http://turfjs.org/static/docs/module-turf_inside.html" rel="nofollow"><code>inside()</code></a> function but is it possible with pure Leaflet?</p>