title: Leaflet map-event 'load' does not fire
body: <p>I am trying to call a function after a leaflet map has successfully loaded, working with leaflet 1.0.1. Regarding to the <a href="http://leafletjs.com/reference-1.0.0.html" rel="noreferrer">docs</a> there is a map event named <a href="http://leafletjs.com/reference-1.0.0.html#map-load" rel="noreferrer"><code>load</code></a> which states: <em>Fired when the map is initialized (when its center and zoom are set for the first time)</em>. So this snipped should fire, if the map has loaded, but that never happens:</p>
  
  <pre><code>function onMapLoad() {
      alert("Map successfully loaded")
  };
  
  mymap.on('load', onMapLoad);
  </code></pre>
  
  <p>There is no error or response, simple nothing.
  So why is the map-load event not working properly ?</p>
  
  <p>Here goes a simple <a href="https://jsfiddle.net/bnuwhw70/" rel="noreferrer">JS FIDDLE</a>. </p>