Merge branch 'master' into dependabot/npm_and_yarn/pug-code-gen-2.0.3

Author: mikeu

docs/plugins/README.md

@@ -131,3 +131,9 @@ Wrapper for [Leaflet-Semicircle](https://github.com/jieter/Leaflet-semicircle).
 Wrapper for [FreeDraw](https://github.com/Wildhoney/Leaflet.FreeDraw)
 
 > Allows drawing shapes on the map and retrieve those shapes as a list of polygons.
+
+## [vue2-leaflet-ruler](https://github.com/panbak/vue2-leaflet-ruler)
+
+Wrapper for [Leaflet-Ruler](https://github.com/gokertanrisever/leaflet-ruler)
+
+> Allows measuring distance and angle on the map.

src/components/LLayerGroup.vue

@@ -27,9 +27,7 @@ export default {
     DomEvent.on(this.mapObject, this.$listeners);
     this.ready = true;
     this.parentContainer = findRealParent(this.$parent);
-    if (this.visible) {
-      this.parentContainer.addLayer(this);
-    }
+    this.parentContainer.addLayer(this, !this.visible);
     this.$nextTick(() => {
       /**
        * Triggers when the component is ready