Drop Events mixin by extending L.Evented so that deprecated warning is not visible anymore in browser console.

gulpfile.js

@@ -6,7 +6,7 @@ var concat     = require('gulp-concat');
 var paths = {
     minified: 'contao-leaflet.js',
     scripts:  ['js/*.js'],
-    dest:     'src/Resources/public/js'
+    dest:     'src/Bundle/Resources/public/js'
 };
 
 gulp.task('clear', function() {

js/Contao.js

@@ -3,9 +3,7 @@
  *
  * This class provides some helpers for loading layer data manages maps and map objects.
  */
-L.Contao = L.Class.extend({
-    includes: L.Mixin.Events,
-
+L.Contao = L.Evented.extend({
     statics: {
         /**
          * Contao extension attribution.