Reducing CPU usage

Reduce CPU usage by configuring the map to throttle frame rate after a period of idle user input.

<!DOCTYPE HTML>
<html>
  <head>
    <script src="https://cdn-webgl.wrld3d.com/wrldjs/dist/latest/wrld.js"></script>
    <link href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.1/leaflet.css" rel="stylesheet" />
  </head>
  
  <body>
  <div style="position: relative">
    <div id="map" style="height: 400px"></div>
    <script>
      var map = L.Wrld.map("map", "your_api_key_here", {
        center: [37.795, -122.395],
        zoom: 17,
        trafficEnabled: false,
        frameRateThrottleWhenIdleEnabled: true,
        throttledTargetFrameIntervalMilliseconds: 500,
        idleSecondsBeforeFrameRateThrottle: 15.0
      });
    </script>

  </div>
  </body>
</html>
v0.1.2122