fix child insertion

lib/Timeline.js

@@ -150,7 +150,7 @@ let Timeline = class Timeline extends lit_element_1.LitElement {
                         r.parent.children.splice(pos - idx, 0, r);
                 }
                 else {
-                    this.rows.splice(idx + r.parent.children.length, 0, r);
+                    this.rows.splice(idx + r.parent.children.length + 1, 0, r);
                     if (!alreadyChild)
                         r.parent.children = [...r.parent.children, r];
                 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jc-timeline",
-  "version": "0.2.8",
+  "version": "0.2.9",
   "description": "web component to manage ressources in time",
   "main": "./lib/main.js",
   "types": "./lib/main.d.ts",

src/Timeline.ts

@@ -202,7 +202,7 @@ class Timeline extends LitElement {
           this.rows.splice(pos, 0, r);
           if (!alreadyChild) r.parent.children.splice(pos - idx, 0, r);
         } else {
-          this.rows.splice(idx + r.parent.children.length, 0, r);
+          this.rows.splice(idx + r.parent.children.length + 1, 0, r);
           if (!alreadyChild) r.parent.children = [...r.parent.children, r];
         }
       } else {