ensure that DOMPatcher knows about the right snabb element

Author: tdumitrescu

lib/dom-patcher.js

@@ -56,6 +56,7 @@ export class DOMPatcher {
         insertHook(this.vnode);
       }
     }
+    this.el = this.vnode.elm;
   }
 
   update(newState) {
@@ -91,6 +92,7 @@ export class DOMPatcher {
 
     patch(this.vnode, newVnode);
     this.vnode = newVnode;
+    this.el = this.vnode.elm;
   }
 
   disconnect() {
@@ -101,6 +103,6 @@ export class DOMPatcher {
     this.el = null;
     // patch with empty vnode to clear out listeners in tree
     // this ensures we don't leave dangling DetachedHTMLElements blocking GC
-    patch(vnode, {sel: vnode.sel});
+    patch(vnode, {sel: vnode.sel, key: vnode.key});
   }
 }